COMPUTER APPRECIATION CONTINUES

System unit: It is also known as central processing unit. It refines row data into tangible form. Hence it is said to be part of computer, it receives data from the keyboard and gives out data through the monitor. There are three main unseen elements involved in the performance of this duty, namely: the main memory, the arithmetic logic unit and the control unit.
The main memory: it is also known as the internal storage devices. This holds program to be executed and the associated data. It’s of two types; ROM and RAM.
ROM (read only memory): Can only read from, neither can the contents be tampered with. It holds information permanently.
RAM (random access memory): This section holds programmes, instructions and data being processed and stored immediate results of processed data awaiting transfer to the output device or storage device.
Control units: This device is responsible for controlling and coordinating all other devise. The controlling and coordinating is done by encoding and decoding i.e interpreting and implementing. It does the inputting of data.
Arithmetic logic unit (ALU): This consists of two units, the arithmetic unit and logic unit. The arithmetic unit functions as addition, subtraction, multiplication and division. The logical unit performs logical operations such as OR, NOR, AND, etc.
Monitor: It can also be called visual display unit or the screen. It is an output device responsible for displaying any information after being processed.
Mouse: A mouse is a hand operating device which is used to point and click items or command objects. A mouse is used with special programs which translates the mouse movements to corresponding actions on the screen. The mouse is useful in two ways the first is to move the cursor and second one is to select what you want the computer to next.
This is the concluding part of the previous post, you can drop a comment, ask a question or request for any topic you want me to post. Thank you.

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