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7.What is primary memory? Answer: Primary memory is a computer memory that a processor accesses first directly. Primary memory also called a volatile memory, because the primary memory can not store the data permanently. Example: RAM

6. What is volatile memory and non-volatile memory? Answer: volatile memory: A volatile memory is a type of storage whose contents are erased when the systems power is turned off. RAM based storage is volatile. Example: RAM non-volatile memory: non-volatile memory is a type of computer memory that has the capability to hold save data even the system power is off. Example: Hard disk, Floppy disk, Pen drive, Magnetic tape etc.

5. What are the difference between SRAM and DRAM? Answer : difference between SRAM and DRAM are:

4. What is RAM? Answer: A RAM (Random Access Memory) is primary memory of a computer. It holds software instructions for CPU. It is called volatile memory that contains data or information temporarily . After outage of power it lost all data for this reason it is called volatile memory.

3.What is computer processor? Answer: Processor is called  brain of a computer. It is a chip that carries out instructions it receives from software. All arithmetic and logical operation are performed by it.

2. What are the major parts of computer? Answer: Major parts of a computer are:                              (i) Processor                              (ii) RAM (Random Access Memory)                              (iii) Hard disk                              (iv) Input device                              (v) Output device

1. What is computer? Answer: A computer is a electronic device that man i pulates data or information . It has ability to sto re , retrieve and process data .