Q. Draw a block diagram of digital computer and describe each component in brief?

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# Draw a block diagram of digital computer and describe each component in brief.
Ans: Computer system is an integrated work of Input unit, Processing unit and Output unit. Raw data given by input unit is processed by Central processing unit and the required out(information) is provided by output unit. The components of computer system are as:

Computer system
· Input unit: An input unit takes the input and converts it into binary form so that the computer can understand it. It is formed by input devices e. g keyboard, mouse, light- pen.
· Central Processing Unit : The brain of computer to execute programs and control the operation of other unitsComponents of CPU
§ MU(Register): It is primary storage and temporarily stores incoming data, intermediate data and final result of processing. It also stores instructions for a job
§ ALU: ALU performs mathematical calculation(+, -, X, / ), logical ( <, >, =, <=, >=, <>) operations. The result of logical operation is TRUE or False.
§ CU: The Control Unit controls and guides the interpretation, flow and manipulation of all data and information. CU sends control signals until the required operations are done properly by ALU and memory. It is responsible for timing and queue for data and instruction. CU gives command to transfer data from the input device ® memory ® ALU ® memory ® output device
CPU chip (processor)->MIPS->ALU + MU + CU =CPUOutput unit : The outcome of CPU is in the form of electronic binary signals is converted by Output unit that can be understood by human beings. VDU, printer, plotter etc are the devices for OU.

Comments

  1. Rupak NepaliOctober 27, 2010 at 8:57 PM

    Thanking for your compliment sir changes may be done soon

    ReplyDelete

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