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PERSONAL COMPUTER SYSTEM (VGA PORTS (CHARACTERISTICS ((SIMILAR TO SERIAL…
PERSONAL COMPUTER SYSTEM
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CPU
MEANING
Central Processing Unit, or the heart and brains of the computer.
FUNCTION
Fetch Each instruction is stored in memory and has its own address. The processor takes this address number from the program counter, which is responsible for tracking which instructions the CPU should execute next.
Decode All programs to be executed are translated to into Assembly instructions. Assembly code must be decoded into binary instructions, which are understandable to your CPU. This step is called decoding.
Execute While executing instructions the CPU can do one of three things: Do calculations with its ALU, move data from one memory location to another, or jump to a different address.
Store The CPU must give feedback after executing an instruction and the output data is written to the memory.
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HARD DRIVES
MEANING
The hard drive of a computer is a device that stores all the software installed on a computer, as well as all the data files created and used by this software.
FUNCTION
Rotating discs and rely on magnetic storage, and solid-state drives (SSD), which have no moving mechanical parts, but use flash memory like the kind found in USB flash drives.
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OPTICAL DRIVES
FUNCTION
User is allow to retrieve, edit and delete his inputted content from the disk such as DVDs, CDs and Blu-ray disks
MEANING
Optical Drive which is mainly used as input device can read and write data from optical disks through an emerged technology of laser beaming
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