introduction to computer and java

Question number 01:

      What is computer:

    ANS    A computer is an electronic device that can that can store and process data in a very short time. A computer is a combination of both software and hardware.

Question number 02:

                                          What are hardware and software and list its some components:

Ans      Hardware:

                                   All the physical components of computer is called hardware that can be touched.

Examples: CPU,Mouse,Keyboard,Moniter,etc;

         Software:

                               A software is an instruction that given to computer that control all the hardware components.

Example:

                  Calculator on desktop,paint function,games,ms word,etc

Question 03:  What does the acronym “CPU” stand for.

  Ans:  It stand for “A Coded Rendition Of Names Yielding Meaning”.

Question 04:    What unit is used to measure CPU speed.

Ans: The ALU(arithmetic logic unit) is used to measure the speed of computer.

Important note :Every computer has it own internal clock, Which emit electron at constant rate. The unit measurement of hertz(Hz).The Intel processor speed is about 3 gigahertz.