Computer is a type of machine which reduces our work and help us to solve our problems. It is basically consist of CPU, Monitor and Its also have its small input and output devices just like keyboard, Speakers Etc. In CPU (Central Processing Unit) there are lots of device are there but out of them to main parts are Hard disk and RAM (Random access memory).The hard disk is mainly used for storage purpose in the computer . We store data in a computer according to the capacity of hard disk & another part is RAM which is basically of two types first one is Primary Memory and another is Secondary.
In Primary Memory we can save our data for a temporary period once we shut down our Computer so our data is lost its save till we are working on that particular data. And on the other hand. In secondary Memory we can save our data for a Permanent period and we don’t lost our data after shutting down our pc and its save till a user itself delete it. And there are also its Subparts ROM (Read only Memory, Prom (Programmable Read only Memory), E prom (Erasable Programmable Read only memory, EE prom (Electrically Erasable Programmable Memory).
In computer CPU is the brain because its do all its work carefully and Speedly. In CPU there are ALU, Control unit are play a major role. ALU stands for Arithmetic logical unit and its work is to solve out any type of arithmetic problems its fetch the problem and solve it in 0 or 1 form because its understand only this language. So all the calculation and logic based work is done by ALU. And control unit control the main function of a Computer means all the controlling action is take care by it.
In Primary Memory we can save our data for a temporary period once we shut down our Computer so our data is lost its save till we are working on that particular data. And on the other hand. In secondary Memory we can save our data for a Permanent period and we don’t lost our data after shutting down our pc and its save till a user itself delete it. And there are also its Subparts ROM (Read only Memory, Prom (Programmable Read only Memory), E prom (Erasable Programmable Read only memory, EE prom (Electrically Erasable Programmable Memory).
In computer CPU is the brain because its do all its work carefully and Speedly. In CPU there are ALU, Control unit are play a major role. ALU stands for Arithmetic logical unit and its work is to solve out any type of arithmetic problems its fetch the problem and solve it in 0 or 1 form because its understand only this language. So all the calculation and logic based work is done by ALU. And control unit control the main function of a Computer means all the controlling action is take care by it.
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