Digital Camera Shopping guide: how to choose a digital camera

Before making a choice should be clear what you need, a clear picture, low price, or more the number of sheets? And accordingly choose a most suitable for your camera. Specifically, should note the following:

1, the median and resolution color camera. This is the main factor affecting the price of the camera. The higher the resolution, color bits and the higher price. Present in the image color, the Olympus C-1000L and C-1400L less color cast that the picture is impressive. Fuji DS-310, the Kodak DC120 and DC210, Agfa series, also doing well. In the resolution, the better the low-resolution camera with Kodak DDC20, DDC25, Casio QV-10A and so on. If you want to buy a cheap digital camera, just shooting ID photos or the photos displayed on the computer screen, this resolution is enough. If you work in the Vehicle Administration, would like to take photographs of vehicles to be seized; or for archiving, real estate, insurance and so on, should select at least medium-resolution camera. The price is 4000 yuan. If you are for the individual photographer and newspaper publishing and printing, high image quality requirements, you can choose the Kodak DC120 and DC210 cameras, etc., the price at 7,000 yuan to more than 10,000 yuan.

2, the number of shots. On the built-in storage, the Casio QV-100 and QV-300 up to shoot 192, Olympus also offers high-end series of at least 120 of memory. If the body has PCMCLA slot machine, you can insert the appropriate memory card, thus increasing the number of shots, but the prices are increasing.

3, energy efficiency. Digital cameras usually have a color LCD device, you can always preview, view or delete any image, in the shooting to help you adjust shooting and shooting time, but it is also very power. The light-type LCD application, you can capture external light source, so that the digital camera LCD light display image, greatly increasing the battery life, according to industry speculation, after the basic digital camera will tend to lighting ceremony, is digital cameras using this technology have SANTOZ400.

4, storage media. Storage capacity of digital cameras the size of the decision you can take the number of sheets in the economic conditions permitting of course, the bigger the better card, but also need to match. Current market, there are two memory card specification, one is CF card, one is SM card, CF card is not used in the floppy disk adapter, SM card is a thin card, can be accompanied by a floppy disk in the floppy drive adapter used directly, and the price cheaper. While choosing a digital camera, traditional camera should also have professional, and should match the corresponding printer.

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i5 + GT330 Samsung R780 evaluation

Like all games of this, the evaluation of the Samsung R780 also has a good hardware configuration. 2.40GHz frequency of the new Core i5-520 processor, with 1GB of video memory on the graphics card GT330M independence for the whole performance has laid a solid foundation; 4GB memory capacity of the system to be more rapid than in the past, large-capacity 500GB hard disk is more for more audio and video files stored with impunity, even if the notebook is often Xiaobian also play their game performance was filled with hope. Let us witness together the following Samsung R780 ultra-cool game this test it!

The new mid-level graphics performance to provide powerful momentum for the game

Samsung R780 main configuration list

Processor

Core i5 520M, frequency 2.40GHz, Core Frequency 2.93GHz, 8MB Cache 3

Main Chipset

Intel Ibex Peak-M PM55

Memory

4GB DDR3 memory, 1066MHz, dual channel

Graphics

NVIDIA GeForce GT330M, 1GB GDDR3 memory

Monitor

17.3 inches (1600X900) LED backlit screen

Hard disk

500GB hard drive (4,500 rpm SATA-II interface, 8MB cache)

CD-ROM

DVD + R

Battery

4400Wh lithium battery

System

Windows 7 pre-installed 64-bit Home Premium

NVIDIA Geforce 300M series laptop graphics cards already in the official announcement a long time, on the whole the new graphics card release that is previous generation GeForce 200M Series Dress to keep up with the same generation of products using 40nm process technology design, with 305M, 310M, GT325M, GT330M, GT335M, GTS350M and GTS360M seven models, games and video cards are tested in the GT330M performance level.

GT330M graphics 3DMark06 test, left 1024, the right is 1600

The order form from the official view, NVIDIA GeForce GT330M level of performance is flattening, as is GT325M can high-frequency version, the simple point that is used to 忽悠 users. NVIDIA GeForce GT330M has 48 stream processors, floating point performance 182GFlops, Shader unit frequency of 1210MHz, Memory Interface 128-bit, when equipped with the highest frequency of GDDR3 800MHz, DDR3 highest at 1066MHz, but does not support SLI. From the bottom of the card game ladder provided, you can rely on the performance of the above 3DMark06 total score, can be found GT330M playable game level graphics.

NVIDIA to seven cards from the new location, which is used to replace the previous generation G210M is the 305M, 310M, are mainstream graphics card with 16 stream processors. Replace GTS250M and GTS260M is GTS350M and GTS360M, positioning high performance level has 96 stream processors. The evaluation of GT330M and GT325M, GT335M performance level is used to replace the familiar GT230/GT240M card. Mainstream graphics cards from the bottom of the test data comparison of the performance can you see GT330M.

As independence was to join the new test in the test machine added to the user as a reference. Graphics on the PCMark05 and Vantage scores is not conclusive, and accessories will be interaction between performance, so its performance is compared to the case, only the sub-test from the graphics comparison. Test scores from the point of view, with the GT330M the 3D scores are performed well, both by a wide margin ahead of the corresponding old model.

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i5 with independent graphics card HP ProBook 6540b Business Laptop evaluation

In generally, requirements of laptop for Business people is high stability and high safety , and in the pursuit of low-key and simple appearance, so as to reflect the strict business style. But with the rapid development of notebook markets, demand for business people to buy became more diverse, they began to like the exquisite beauty of form and full feature, and the traditional business notebook's appearance and the function can not meet their needs. In addition, many people are keen for various games, which requires excellent notebook with a higher graphics performance, and stable performance is an important business factor. In a sense, business, large screen, high distribution, 3D games, high definition cinemas have been linked together, so the entertainment business notebook application has entered the mainstream topic.

Now which I would like to intrduce is such a product, it has good appearance, steady fashion, a strong configuration, the work can easily enjoy the entertainment, has a 15.6 inch waist,the model is HP ProBook 6540b, let us have a look at it.

HP ProBook 6540b used the latest intel Core (TM) i5-430M processor with 2.27GHz frequency, equipped with ATi Mobility Radeon HD4550 graphics card, 2GB DDR3 memory, 320GB hard drive, the configuration of the whole are very good of. In addition a new generation of strong core i5 processor and HD4550 graphics card with an independent, in the overall performance greatly improved.

Excellent appearance and details of the design:

Business PCs give you the impression that it has been a thick shell and the "superior" weight. The business books tough lines, simple design also become its hallmark features. In addition, HP ProBook 6540b designs steady, generous, do not add too much fancy decoration and embellishment. Reflects a steady business people, capable of temperament and style.

We see HP ProBook 6540b shell does not use a commercial application of the usual metal material, and used plastic material, and sprayed with paint design, stable, feel very good, and it blows the lid easy to paint criticized fingerprint contamination. Alternatively, reduced cost, to a certain extent, the purchase cost savings for consumers.

This HP ProBook 6540b card also used the screen lock button, and the prevailing adsorption lock different snap-lock the screen can be completely fixed in the camera body, greatly enhance the security of business notebooks.

As a business notebook, HP has a very qualified ProBook 6540b appearance, tough line, "outstanding" in quantity and simple style, all make this HP ProBook 6540b been great concern of consumers, and in more detail is fully human, spill-resistant keyboard applications, very rich set of interfaces, both for HP ProBook 6540b been widely acclaimed by business people.

Advantages:

Very rich interface design

Excellent video performance of the game

I5 processors with strong performance

Less than:

Lack of portable performance

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IBM error code analysis, IBM Common 2010 1082 0271 Fan error error

10X

101: Interrupt failure

102: Clock failure

103: time interrupt failure

104: Protected mode failure

105: Last 8042 command not accepted

107: NMI test failure

108: Clock bus test failure

109: Low meg-chip select test system board. Nm

110 memory slots memory parity detection plane if connected to a computer system motherboard to remove the extension parts

111I / O expansion memory parity detection system motherboard components or port replicator.

11XX

1101: A class of device failure detection system board serial device communication wiring

12XX

1201: B type detection failed system board (infrared)

158 is set SuperVisor password, but not set hard drive password set password

159 hard drive password and the password is not the same set SuperVisor hard disk password and the password the same SuperVisor

161 battery backup battery backup battery failure detection system board.

Time and date is not set 163 to set the time and date system board.

173 equipment, loss of data on the screen, select OK, and then set the time and date of backup battery system board.

174 set error: first, testing installed equipment list and then change the FRU parts hard drive detection device configuration system board.

0175 CRC1 wrong, stop POST task. EEPROM checksum error. System board security chip

0177 SuperVisor password wrong system board test

0178EEPROM system board failure

2010 hard drive microcode

17XX

1701: hard disk controller failure

1780, 1790: Hard Disk 0 Error

1781, 1791: Hard one error hard disk drive system motherboard

183 SuperVisor password when prompted enter the wrong password to enter the correct SuperVisor

184 power-on password to enter BIOS settings wrong test to reset the boot password

185 illegal, access to BIOS settings, boot sequence reset the boot sequence

1861 System board

0187 EAIA data read errors. EEPROM read failure. System board

0188 RFID illegal CRC2 wrong region or continuous information. EEPROM checksum error. System board

0189 illegal RFID continuous information area. EEPROM checksum error. System board

0190 battery low error to charge the battery the battery compartment

0193 RF antenna was removed. Input supervisor (Super) Password

0194 notebook is carried through the security inspection gate input supervisor (Super) Password

0195 security hardware security disturbance input SuperVisor (super) password to access the BIOS setup utility, select Config, select the IBM Security Chip, select ClearIBM Security Chip to clear this error System board security chip

0196 Security hardware removed the safety input SuperVisor (super) password to access the BIOS setup utility, select Config, select the IBM Security Chip, select Clear IBM Security Chip to clear this error System board security chip

0197 Illegal modify the requirements of remote remote configuration of the security failure of the security chip. To confirm the operation and try again.

01C8 multiple Modem device - removal of one of press Esc to continue. Removed a MiniPCI Modem card or Modem daughter card, or press Esc to ignore the error.

Mainboard

01C9 multiple network class device - removal of one of press Esc to continue. Removed a MiniPCI Ethernet card or Ethernet daughter card, or press Esc to ignore the error.

Mainboard

0200 hard disk error. The hard non-work. Re-install the hard disk (demolition) in the BIOS setup utility to restore the default setting hard disk drive system motherboard

021x Keyboard error running interactive keyboard and auxiliary input device testing

0220 Monitor type error. Monitor type does not match with the CMOS definition. In the BIOS setup utility to restore the default settings

0230 map of memory error. Memory mapping error in the offset nnnn. System board

0231 system memory error. System memory error in the offset nnnn. Motherboard memory system

0232 expanded memory wrong. Extended memory error in the offset nnnn. Memory. System board

0250 System battery error - System battery damage replacement battery backup, running IBM BIOS setup utility to reset the date and time.

0251 System CMOS checksum error - default settings using the replacement battery backup, running IBM BIOS setup utility to reset the date and time.

0252 Password checksum error - password is cleared to enter IBM BIOS settings and clear the password (Reset)

0260 replacement battery backup system time error, run IBM BIOS setup utility to reset the date and time.

Mainboard

0270 real-time clock wrong replacement battery backup, running IBM BIOS setup utility to reset the date and time. Mainboard

0271 date and time wrong. Computer has not set a date or time. Run IBM BIOS setup utility to reset the date and time

0280 Start incomplete error - The default setting to use into the IBM BIOS setup utility to restore defaults memory. System board

02B2 Incorrect drive A disk drive

External floppy disk drive

I / O card

02F4 EISA CMOS not write into the IBM BIOS setup utility to restore the default settings replace the backup battery system motherboard

Memory test failed 02F5 memory. System board

Software NMI failed 02F6 memory. System board

02F7 Fail-safe timer NMI failure of memory. System board

1801 connected to the docking station does not support Turn off the computer and then remove it

1802 unauthorized network card inserted - and then remove the miniPCI network card installed remove the miniPCI network card. System board

Device address conflict: Device address conflict

In the BIOS setup utility to restore the default settings backup battery system motherboard

Allocation error for device: equipment positioning error

In the BIOS setup utility to restore the default settings backup battery system motherboard

Failing bits: nnnn-bit failure

System board DIMM memory slots

Invalid system configuration data: illegal, system configuration data

System board DIMM memory slots

I / O device IRQ conflict: I / O device IRQ conflict

In the BIOS setup utility to restore the default settings backup battery system motherboard

Operating system not found: no operating system

Check operating system error and is not installed correctly. Enter the IBM BIOS setup utility checks the hard disk or floppy drive is recognized correctly

Reset hard drive to reinstall the operating system hard disk drive floppy disk drive system motherboard

Hibernation error: hibernate error

Restore system settings to enter sleep state if the memory capacity before replacement, and re-create the hibernation file (delete c: hibernation file the following re-entry)

Fan error: Fan Error

Fan

Thermal sensing error: thermal sensor error

Mainboard

1. Select OK in the error screen; then set the time and date.

(ERROR in the boot screen, press OK, and then set the system time)

2. Backup battery. (CMOS battery needs to be replaced)

3. System board. (Motherboard problem)

163 (Time and date were not set.) (System time has not set a good or confusion)

1. Set time and date. (To set the correct system time)

2. System board. (Motherboard problem)

192 (Fan error.) (CPU cooling fan failure)

1. Measure the voltage of the backup battery. If the

voltage is not correct, replace the backup battery.

(Check the CMOS backup battery voltage, replace the battery voltage not work)

2. Fan (to replace the CPU fan)

3. System board (motherboard problem)

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Top ten notebook design concept

1, Canova dual-screen laptop design two screens are ultra-sensitive touch screen, easy to use, in particular, it allows users to browse the same as reading a newspaper.

2, Sony Vaio Zoom notebook concept of Sony's players have a holographic glass screen, keyboard adopted graphic touch design. In particular when shutdown, the screen returned to a transparent state.

3, Samsung DesCom is basically the concept of a combo-type notebooks, and computer tables to achieve "seamless" integration. But I wonder if there is no desk or table, Ban Zhao did not want to go, then. . . . . . . .

4, MacTab Apple's high-end products, using incredibly thin wireless keyboard. In fact, the iMac is now one machine we will be able to see quite a place of metal thin keyboard, but this more cattle, it can be closely linked to the screen through the magnets and the groove, usually carrying the screen when the shield was still.

5, LG laptop concept design eco ecological concepts LG laptop using fuel cells and organic light-emitting diode display technology, has received Red Dot Red Dot Award for Best Concept Design Award nominations notebook. But I always felt that the design in general, not particularly pretty, but added the current LG phone is amazing creativity!

6, Compenion out of hand at their own expense Felix Schmidberger has two sliding organic light-emitting diode display, when necessary, which can act as a screen keyboard. This design is very charm of the!

7, Samsung Amoled unique design, set of ultra-thin, smooth, and the keyboard on a touch. Amoled said the lack of tactile feedback keyboard.

But I think it looks more general, there is no sense of the kind of high-end technology, seemingly has no texture. . . Perhaps because I am not a cold bar Samsung Computer.

8, "Traveler" This is a concept designed specifically for travelers notebook. Image to say that it is an own photos and data storage capabilities of the GPS navigation system, in addition, it has built-in geotagging features, be able to add a photo shoot in the information. To be honest, outside the very Turkish, which is very Western style. . . .

9, Canvas provides designers with high-quality, while helping the artist to improve "productivity." The most significant feature of this notebook is the "thin", including the touch screen, including all components of all is taking the ultra-thin line. This design is what I love, with an estimated configuration is also very fierce, and the family kind of machine to be placed Taiwan definitely feel so cool. . . . .

10, Apple Macbook 0801 by Issam Sana Da (Isamu Sanada) design, more like a black version of the current Macbook Air.

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How to use the notebook as far as possible to extension the working time

Reduce the screen brightness is not only power but also to extend the life of LCD screen. Large LCD screen notebook power consumption, but also the useful life of LCD screens have a direct relationship with the brightness of the LCD screen lamp lit side of the hair alone, fluorescent tubes and display content in accordance with instructions from the CPU dynamically lit, providing lamp voltage is Dynamic inverter driven by high-pressure formed, and a suitable not only reduce the brightness of LCD screen can effectively extend the battery time, but also can improve the life of LCD screens.

The use of computer power-saving features. Now the notebook processors and graphics chips have lower operating frequency and voltage to extend the use of time functions, open the appropriate option to be extended battery life.

Hard disk is one of the more power-hungry components, so long as the state will be in a read-write power consumption, the program of visits to the hard drive more hard drives will be more power, so under normal circumstances the use of the battery will not run on the hard drive large-scale software, do not use the battery in the conduct disk defragmentation.

Notebook drive is also a big power, full-speed work under the hard disk drive is more than the costs of electricity, but also have a greater heat, so a long time ago not to use CD-ROM CD-ROM from the time it would be preferable to CD-ROM drive taken out. For the frequently used CD-ROM, the best method is to use a virtual drive software to its virtual hard disk, so that the method is not only power, but also effectively increase drive life expectancy. Can also try by installing NERO DriveSpeed, PowerBooster can reduce software such as CD-ROM, hard drive speed, etc., in order to effectively reduce the power consumption of notebook.

Use and disable external devices. Like pcmcia cards, printers, etc. as long as the peripherals connected to the notebook, even if the notebook does not work will consume electricity, so when we do not need to use these peripherals is best to take them from the notebook down. Port devices such as modem, com port, infrared, Bluetooth, wireless network card, etc. If you do not use often would be better to disable it, but also an energy-saving path.

Timing large-scale software to run. Recommended the use of battery time, do not use some features of the system is complete, but demanding software. Some people use battery-powered playing big games or watching movies, the battery usage time will be "very short", in fact, it is unreasonable to use the battery behavior.

Laptop cooling. On the surface the notebook cooling and energy-saving notebook no connection, in fact, a very close relationship between the two. Laptop due to smaller need its own cooling system to regulate the heat. When the temperature reaches a certain temperature-controlled fan has started, it will naturally increase the notebook's power consumption, so long as we can help notebook cooling, control the temperature of a good notebook, you can reduce the startup time for temperature-controlled fan, which also can indirectly extend notebook battery life. The author in the maintenance of their own notebook computers found that: a lot of dust accumulated on the heat sink, which greatly undermines its thermal performance. I observed most of the notebook is a miniature centrifugal cooling fan from the bottom of the air inhaled, blowing machine outside the radiator to the heat, once the dust build-up in the heat sink on the block cooling, resulting in poor cooling fans often turn to. So summing up: where to place the use of laptop computers must be clean, in order to prevent dust from entering the cooling effect. As the laptop's mobility is good, and some people like to use in bed or a lap, do you not know of textiles into the hairiness scattered rather than in the past, and the hazards of dust, but also because of the plasticity of textile stronger direct impact on thermal paste was admitted to draft , it is recommended when used in the textile, mat a pretty solid following a large book will change the above phenomenon.

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IBM Processor Developer: Power7 not inferior to Intel

March 12 message, in February 2010 of the semiconductor-related international conferences "ISSCC 2010", U.S. IBM released the embedded 8-core, mixed containing DRAM, floating-point performance, a server with up to 200GFLOPS microprocessor "Power7" attracted the attention of the participants. The product is manufactured using 45nm process technology, a maximum operating frequency of 4.14GHz. Technology-line on the processor used in new technologies, as well as the advantages relative to competitors, such as processors, interviewed responsible for Power7 processor developed by IBM engineers and developers responsible Ron Kalla. Below is the full text:

- And 65nm process "Power6" in comparison, Power7 in what has improved?

Power6, compared with, Power7 kernel number increased to four times the number of threads per-core executable to a two-fold. In addition, imported to the kernel half of sleep, increasing an average of cache memory allocated to the remaining core of the "Turbo Core Mode" functions. Not only improve performance, but also uses a number of low-power technology. If only from a performance point of view, Power6 not less than Power7, but can not be called low-power processor. The Power7 unit of electricity consumed will be the performance of up to 4 times the Power6.

- The previously external L3 cache as a mixed set DRAM integrated into Power7, this point it has become a topic of concern.

Containing DRAM using mixed mode L3 cache, and is said to achieve our Power7 the largest technological innovations. We have about 10 years ago started to focus on the processor DRAM mixed set, this was finally achieved. It took 10 years to achieve, we can see the high technical difficulty. With the use of mixed composition containing L3 cache, SRAM, mixed containing DRAM memory cell area can be reduced to 1 / 3, the standby power consumption down to 1 / 5. When compared with the external L3 cache, latency (Latency) can be shortened to 1 / 6.

- With no less than Intel's processors do?

Less better than Intel's chips. Particularly in the processor core performance and memory access speed balance, as well as during operation, the average memory bandwidth, but also over other competitors, including Intel. Even if only from the point of view chip area also has advantages, such as: mixed set through the use of DRAM, making integration of L3 cache memory density is higher than the same process technology, Intel's processors.

- Following the Power7 after the "Power8" would be what kind of performance is to have a chip? In addition, your company has been put into operation when using Intel's 32nm manufacturing process processor?

Power8 is still in the conceptual stage of chip design, performance indicators can not open. However, the mixed containing DRAM, etc. We hope to continue to adopt good technology. With regard to commissioning date, you can refer to the past (every three years, a new architecture launch) cycle. While the 32nm production process of a date can not be published, but I can tell that the production has been incorporated into the field of vision.

- With the energy conservation become a global trend, the server processors compete with what changes occurred?

Low-power technology has become an important differentiating factor. IBM in 2001, production in the 180nm process of "Power4" when the power management techniques even responsible for the development team of professionals does not exist. At present, in the chips and systems at various levels have started to use low-power technology. In the future, into a similar power gating (Power Gating) as a low-power technology is a must.

- IBM to engage in one-stop until the server from the semiconductor process development. From the processor is responsible for the development of technical staff point of view, this is not achieved with the competitors to differentiate the key factor?

I very much agree with this view. Can improve the processor performance of "magic-like approach" does not exist. From the semiconductor process until the chip design, firmware, OS, servers, those responsible at all levels must work in their respective positions will do our best. IBM, with such an environment. For example, the company has senior engineers (technical director) to participate in the meeting. By this way with the semiconductor technology experts to explore this even if I am responsible for the design is also extremely useful.

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