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Definition
| The CPU is the brain of the computer and consists of the control unit and arithmetic logic unit.It processes data through the instruction cycle: fetch,decode,execute,and store. Features such as parallel processing and multi-core processing increase the CPU's ability to process multiple instructions at the same time, increasing its speed. |
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| refers to the physical components of a computer. |
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| the components that serve the input,output,and storage function. |
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Central processing unit CPU or
processor |
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Definition
| the brain of a computer;housed inside the system unit on the mother board. It consists of two parts :the arithmetic logic unit and the control unit. |
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| arithmetic logic unit (ALU) |
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Definition
| performs arithmetic( addition and subtraction ) and logic(And,or,not)calculations. |
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| manages the movement of data though the CPU. |
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| which is also known as the " fetch-and-execute cycle" or the " machine cycle " |
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| the speed at which the processors executes the cycle. |
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| billions of cycle per second . A 3 GHz processor has 3 billion data cycle per second. |
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| uses multiple processors, or multi-core processor,to divide up the work it can dramatically increase computer performance when running processor-intensive programs, such as system scans or multiple simultaneous programs. |
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| consists of two or more processors that are integrated speed over single-core processors and reduces energy consumption over multiple separate processors. |
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| 1st thing you need to know (sec 1) |
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Definition
| the CPU consists of the arithmetic logic unit (ALU) and the control unit. |
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| 2nd thing you need to know (sec 1) |
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| the four steps of the instruction cycle are : fetch,decode,execute, and store . |
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| 3rd thing you need to know (sec 1) |
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Definition
| Modern processor use pipelining and parallel processing to improve performance. |
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| 4th thing you need to know ( sec 1 ) |
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| A multi-core processing consists of more than one processor on a single chip. |
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Definition
| The system unit is the case the houses the power supply,motherboard,processor ( CPU), heat sink and cooling fan,and memory of a computer. it also has drive bays to hold the storage devices and openings for peripheral devices to connect to expansion cards on the motherboard. The motherboard is the main circuit board of a computer. In addition to housing the CPU,it contains: drive contains: drive controllers and interfaces, expansion-slots , data buses, ports and connectors , BIOS, and memory. A Motherboard may also include integrated peripherals, such as video, sound and network cards. |
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Definition
| is the case that encloses and protects the power supply, motherboard,processor (CPU), and memory of a computer. |
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| the main circuit board of your computer. |
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| on the motherboard provides a drive interface, which connects disk to the processor. |
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Definition
| the standard internal drive interface. |
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| EIDE(enhanced integrated drive electronics) |
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Definition
| A legacy drive interface found on the motherboard of older personal computers. |
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| plugs directly into expansions slots on the motherboard and allow you to connect devices to a computer. |
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| PCI (peripheral component interconnect) |
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| the most common type of expansion slot on a motherboard that an expansion card plugs into. |
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| A faster version of PCI that's typically used to connect a video card. |
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| AGP( accelerated graphics port) |
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Definition
| the standard analog video port on computer manufactured before 2009. |
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| Is information that flows between the computer over wires on the motherboard. |
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| are used to connect peripheral devices to the motherboard. USB and FireWire are the most common ports today. |
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| Serial and parallel ports |
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Definition
| are legacy ports that aren't typically found on computers. |
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Definition
| A legacy ports used to connect a keyboard and mouse |
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| RAM( ramdom access memory) |
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Definition
| A form of volatil memory that hold the operating system, programs , and the data the computer is currently using. Any information left in memory is lost when the power is turned off. |
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Definition
| A nonvoatile form of memory that doesn't need to keep its data. |
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| USB( Universal Serial Bus) |
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Definition
| A standard port type that's used to connect many kinds of devices , including printer, mice, keyboard, digital cameras, cell phones, and external drives. Up to 127 devices can share a single USB port. |
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| A device used to connect multiple USB device to a single USB port. |
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| 1st thing you need to know (sec 2) |
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| The motherboard is the main ciruit board in a computer . |
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| 2nd thing you need to know (sec 2) |
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| A motherboard proviedes the way for devices to attach to a file. |
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| 3rd thing you need to know (sec 2) |
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| Information flows between the computer of a computer over data buses. |
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| 4th thing you need to know (sec 2) |
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| The BIOS is a program stored on a chip on the motherboard that's used to start up the computer. |
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| 5th thing you need to know (sec 2) |
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Definition
| RAM is volatile memory that holds the operateing system, programs, and data the computer is currently using. |
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| A single bit ( or switch) has two possible states- on or off - and can be used for situation with two possibles , as yes/no ,true/false, or boy/girl.Digital data is repesent by 8-bit(1byte)binary code on most modern computers.the 8-bit ASCII system originally had binary codes for 256 characters. |
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