computer s full form | what is computer | introduction of computer
We live in the computer age. Most of our day-to-day activities are influenced by the use of computers. While in areas like science and technology improvements can be achieved without computers, it become necessary for each and every one of us to have a basic knowledge of Full Form computers.
A computer is a collection of electronic and electro-mechanical devices, which accepts some kind of data (expressive in numerical or logical terms) it is stores the data for future reference, processes the data as per user instructions and produces the desired output in soft copy and hard copy format.
Hardcopy :- The out put provided by the printer is called hard copy. We can seen and touch this is called hard copy. It is permanent in nature.
Soft copy :- The out put provided by the monitor is called soft copy. We can not seen and touch it is called soft copy.
Computer are divided into three parts.
1) Input Unit
2) Processing Unit
3) Output Unit
1) Input Unit :- It is the unit of the computer through which a user can be filled the information to the computer is called Input Unit. The computer device which is used for that purpose is called Input Device.
Example are :- Mouse, Keyboard, Scanner etc.
2) Processing Unit :- It is also called as the central processing unit and the main brain of the computer which process all the data.
The C.P.U has three parts.
1) Control unit
2) Memory unit :- The memory of computer is the storage place Inside the C.P.U we can store the data, information, picture, song and so many things. It is divided two parts.
A) Main/Primary or Internal memory
B) Mass/Secondary or External memory
A) Main/Primary or Internal memory :-
It is the memory which is present inside the c.p.u is store the data temporarily for the manipulation. It is divided into two parts.
i) ROM :- The Full form of ROM it’s stands for Read Only Memory. The user can read only data from memory, but can never write. Information is permanently recorded so that it can’t be charged by the user. It’s non-volatile in nature, meaning that the contents of ROM are not lost when the computer is switch off, it remains there. It is written by the manufacturer at the time of manufacturing. It is divided into three types.
a) PROM (Programmable Read Only Memory)
b) EPROM (Erasable Programmable Read Only Memory)
ii) RAM :- The full form of RAM It’s stands for Random Access Memory. It is also known read and write memory. We can read and write in this RAM. It is volatile and nature. Volatile means when the power is present inside the c.p.u content of RAM is available. But it is loses its content when the power is turned off. Now a days in market 128MB, 256MB, 512MB, 1GB of RAM are available. RAM also divided into two types.
a) Static RAM (S.RAM)
b) Dynamic RAM (D.RAM)
B) Mass/Secondary or External memory :- The Secondary Memory is also known as auxiliary memory and backup memory. Large amount of data can be stored here for a longer period, so that the data is available when it is required.
Type of External Memory :-
Magnetic Tape
Floppy Disk
Hard Disk
CD (Compact Disk)
DVD (Digital Video Disk)
Arithmetic and Logic unit (ALU) :- ALU stands for Arithmetic and logic unit. The Arithmetical means the calculation +, -, ×, /. But logical calculation means <, >, <=, >=, not equal to, not etc.
3) Output Unit :- This is the unit through which we get information as hardcopy or soft copy.
Example- monitor, printer, speaker etc.
There are three different types of a computer .
Originally published at https://lucentgkquiz.blogspot.com.
