Computer Hardware
For 1
Computer hardware can be divides into four categories: input hardware, storage-hardware, processing hardware, and output hardware.
New words:
hardware hardware
category kind, category
process
Computer hardware can be divided into four categories: input hardware, storage hardware, processing hardware, and output hardware.
Para 2 Input Hardware
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. Its key are arranged in the typical typewriter layout. There are also a number of additional keys. They can be used to enter special computer-related codes. Although it isn't the only type of input device available, the computer keyboard is the one which is most generally used by the business community.
New words:
form format; form; shape; appearance
suitable
additional
The purpose of the input hardware is to collect information and convert it into a suitable format that can be processed by a computer. The most common input device is the keyboard. It looks a lot like a typewriter keyboard. Its keys follow the layout of a typewriter, but also have many extra keys. They can be used to enter special computer-related codes. Although it is not the only input device, it is the most widely used by the high street community.
para 3 Storage Hardware
The purpose of storage hardware is to provide a means of storing computer instructions and data in a form that is relatively permanent, that is, the data is not lost when the power is turned off and easy to retrieve when needed for processing. Storage hardware serves the same basic function as do office filing systems except that it stores data as electromagnetic signals or laser-etched spots, commonly on disk or tape, rather than on paper.
New words:
relatively adv.
permanent adj.
retrieve vt. [count] retrieve; restore; regain vi. retrieve prey n. [count] retrieve; restore, retrieve
electromagnetic adj.
Storage hardware is used to provide a means of storing computer instructions and data in a relatively permanent form that is not lost in the event of a power outage and can be easily retrieved when processing is required. Storage hardware works almost the same way as an office document system, except that storage hardware stores data in the form of electromagnetic signals or laser-etched dots on disk or tape, rather than printing it on paper.
Para 4 Processing Hardware
The purpose of processing hardware is to retrieve, interpret, and direct the execution of software instructions which are provided to the computer. The most common components of processing hardware are the central processing unit and main memory.
New words:
interpret vt. explain; interpret vi. explain; translate
directly adj.
execution n.
central adj. central; main; central n. telephone switchboard
The purpose of processing hardware is to retrieve, interpret, and direct the execution of software instructions provided to a computer. Common components of processing hardware are the central processing unit and main memory.
for 5
The central processing unit(CPU) is the brain of the computer. It reads and interprets software instructions and coordinates the processing activities that must take place. The design of the CPU affects the processing power and the speed of the computer, as well as the amount of main memory it can use effectively. With a well-designed CPU in your computer, you can perform highly sophisticated tasks in a very short time.
New words:
coordinate vt. adjust; integrate vi. coordinate
sophisticated adj.
The central processing unit (CPU) is the brain of the computer. It reads and interprets software instructions and coordinates the operational commands that must be executed. The design of the CPU affects the processing power and processing speed of the computer, as well as the processing efficiency of the main memory. If you have a well-designed CPU in your computer, you can efficiently complete complex tasks in a short amount of time.
for 6
Main memory (also called internal memory, primary storage, or just memory) can be thought of as an electronic desktop. The more desk surface you have in front of you, the more you can place on it. Similarly, if your computer has a lot of memory, you can place more software instructions in it. The amount of memory available determines whether you can simple or sophisticated software; a computer with a large memory is more capable of holding the thousands of instructions that are contained in the more sophisticated software programs. A large memory also allows you to work with and manipulate great amounts of data and information at one time. Quite simply, the more main memory you have in your computer, the more you can accomplish.
New words:
electronic adj. electronic n. electronic circuit; electronic device
surface n. surface; surface layer; appearance adj. superficial, superficial vi. surface vt.
determine v. (to make) decide, (to make) make a decision vt.
manipulate vt.
Main memory (also called internal memory, main memory or just memory) can be thought of as an electronic desktop. The bigger the tabletop in front of you, the more things you can put on it. Similarly, if your computer has a lot of memory, you can put more software instructions in it. The amount of memory available determines whether you can use simple or complex software; computers with large amounts of memory can hold thousands of instructions in complex software programs. Large memory also allows you to use and manipulate large amounts of data and information at the same time. Simply put, the larger your computer's main memory, the more you can do.
Para 7 Output Hardware
The purpose o output hardware is to provide the user with the means to view information produced by the computer system. Information is output in either hardcopy or softcopy form. Hardcopy output can be held in your hand——examples are paper with text(words or numbers) or graphics printed on it. Softcopy output is displayed on a monitor, a television-like screen on which you can read text and graphics.
New words:
hardcopy n. hardcopy
softcopy n.
graphics adj.
The purpose of the output hardware is to provide a way for the user to see the information processed by the computer system. Information output is either in hard copy or soft copy form. Hard copies can be held by you, such as paper printed with text (words or numbers) or images. The soft copy is displayed only on the monitor, which is like a TV screen on which you can see text and images.