Hacder's Lab

雨林木风 各系统 md5 值

January 7th, 2011 . by hacder

更新于 2011年1月7日,使用方法很简单,打开再直接把ISO文件拖入MD5就可以了
Windows Vista ULTIMATE With SP1 精简版V2.1


July 14th, 2008 . by hacder

(1) 分别把memcached和libevent下载下来:
# wget http://www.danga.com/memcached/dist/memcached-1.2.2.tar.gz
# wget http://www.monkey.org/~provos/libevent-1.3.tar.gz
(2) 先安装libevent:


June 26th, 2008 . by hacder

据说是iPhone UI产品的设计稿,有设计师放在互联网上,以供大家欣赏的。



January 10th, 2008 . by hacder


unit 2 Types Of Computer Systems

January 3rd, 2008 . by hacder

[align=left]Types Of Computer Systems[/align][align=left]You should be familiar with the differences among computer systems if you want to show a potential employer that you have a fundamental knowledge of computer.Computers come in a variety of sizes and shapes and with a variety of processing capabilities.The earliest computers were quite large because of the crude technologies used;as technological improvements were made in computer can be smaller than a postage stamp.[/align][align=left]To provide a basis for comparing their capabilities,computers are generally grouped into four basic categories:[/align][align=left](1)Supercomputers,which are the powerful giants of the computer world;[/align][align=left](2)Mainframe computers, which are large, extremely powerful computers used by many large companies;[/align][align=left](3)Minicomputers, which are the next most powerful;[/align][align=left](4)Microcomputers, which are the least powerful-but which you most likely will be required to use in business.[/align][align=left]It’s hard to assign a worthwhile definition to each type of computer because definitions can get bogged down in potentially confusing technical jargon. Nevertheless, the following definitions can suffice:[/align][align=left](1) A supercomputer can handle gigantic amounts of scientific computation. It’s usually maintained in a special room or environment, and may be about 50,000 times faster than a microcomputer. As a user in business, you probably would not have contact with a supercomputer. However, you might if you worked in the areas of defense and weaponry, weather forecasting, scientific research, at one of several large universities, or for the National Aeronautics and Space Administration.[/align][align=left](2) A mainframe computer is a large computer, usually housed in a controlled environment, that can support the processing requirements of hundreds and often thousands of users and computer professionals. If you go to work for an airline, a bank, a large insurance company, a large accounting company, a large university, or the Social Security Administration, you will likely have contact, through your individual workstation, with a mainframe computer.[/align](3) A minicomputer, also known as a midsize or low-end mainframe computer, is similar to but less powerful than a mainframe computer. It can support 2 to about 50 users and computer professionals. Minicomputers and mainframe computers can work much faster than microcomputers and have many storage locations in main memory. Many small and medium-sized companies today use minicomputers, so if you go into the business world, chances are good that you will have contact with minicomputer.

unit 3 The Central Processing Unit

January 3rd, 2008 . by hacder

The Central Processing Unit
The central processing unit (CPU) is the heart of the computer of the computer system. Among other things, it configuration determines whether a computer is fast or slow in relation to other computers. The CPU is the most complex computer system component, responsible for directing most of the computer system activities based on the instructions provided. As one computer generation has evolved to the next, the physical size of the CPU has often become smaller, while its speed and capacity have increased tremendously. Indeed, these changes resulted in microcomputers that are small enough to fit on you desk or you lap. The CPU circuitry of a microcomputer-called a microprocessor-can fit on a chip about the size of your thumbnail, or even smaller.

unit 1 Computer Hardware

January 3rd, 2008 . by hacder

Computer Hardware
Computer hardware can be divided into Four categories:[list][*]Input hardware[*]Storage hardware[*]Processing hardware[*]Output hardware (Peripheral devices )[/list][u]Input Hardware[/u]The purpose of input hardware is to collect data and convert it into a form suitable for computer processing. The most common input device is a keyboard. It looks very much like a typewriter keyboard with rows of keys in the typical typewriter layout, as well as a number of additional keys used to enter special computer related codes. Although it isn’t the only type of input device available, the computer keyboard is the one most generally used. Some other input devices are light pen, mouse, track ball and touch screen digitizers.


December 30th, 2007 . by hacder



December 29th, 2007 . by hacder



December 28th, 2007 . by hacder


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