Good Question!! Cache is a memory where the data, which are already used by the CPU, is stored. And Cache can supply this data very quickly to the CPU in case of re-access. Thus, Cache is needed to increase the performance speed of the CPU.

Memory    ^       `  Output->-ALU-<-Input  There is only one memory linked with the ALU. There lies both the important stuffs of the computer-- Instruction and Data.  How does ALU get access to Data and Instruction?  There are three kinds of buses which link the ALU with the memory. They are: Data Bus; Address … Read more

You must have read about Functions in C. Every Function in C returns a value to the Calling Function. You must have already seen this. Whenever you called a function by passing its arguments, it tells the calling function a value in return. 'main()' is also a function, that can be CALLED if you are … Read more

To learn the answer: Please switch off your mobile phone, at least for a month; Transport by your own foot while going out; Don't eat ice creams, because it uses Fridge; Stop watching TV and stop listening to Radio; and so on. You'll understand the Importance of TeChnology in our daily life, just by doing … Read more