define digital computer with the help of block diagram in detail
Answers
A digital computer is a programmable machine which read the binary instruction and processes the data which are presented in binary form.
Digital computers are different from analog computers in the sense that analog computer process the analog data. Here the term analog represents continuous data .
The digital computer takes the binary data at input, processes according to the set of instructions called program and produces the digital output.
Following main function units of a digital computers
Central Processing Unit (CPU)
Memory
Input/Output
Auxiliary memory
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Answer:
From performing basic operations like watching a movie to high-level functions like manufacturing a car. The computers are doing it all.
Let us look at the basic block diagram of the computer and then understand how each part contributes to its functioning.
CPU – Central Processing Unit
Central Processing Unit or the CPU, is the brain of the computer. It works the same way a human brain works. As the brain controls all human activities, the CPU too controls all tasks.
ALU – Arithmetic Logic Unit
The Arithmetic Logic Unit is made of two terms, arithmetic and logic. There are two major functions that this unit performs.
Data inserted through the input unit into the primary memory. Performs the basic arithmetical operation on it. Like addition, subtraction, multiplication, and division. It performs all sorts of calculations required on the data. Then sends back data to the storage.
CU – Control Unit
The control unit as the name suggests is the controller of all the activities/tasks and operations. All this is performed inside the computer.
The memory unit sends a set of instructions to the control unit. Then the control unit in turn converts those instructions. After that these instructions are converted to control signals.
Reference https://artoftesting.com/block-diagram-of-computer