A computer is a programmable electronic device that accepts raw data as input and processes it with a set of instructions (a program) to produce the result as output. It renders output just after performing mathematical and logical operations and can save the output for future use. It can process numerical as well as non-numerical calculations. The term “computer” is derived from the Latin word “computare” which means to calculate.
A computer is designed to execute applications and provides a variety of solutions through integrated hardware and software components. It works with the help of programs and represents the decimal numbers through a string of binary digits. It also has a memory that stores the data, programs, and result of processing. The components of a computer such as machinery that includes wires, transistors, circuits, hard disk are called hardware. Whereas, the programs and data are called software.
A computer is an electronic device, operating under the control of instructions stored in its own memory that can accept data (input), process the data according to specified rules, produce information (output), and store the information for future use. In other word, Computer is an advanced electronic device that takes raw data as input from the user and processes these data under the control of set of instructions (called programmed) and gives the result (output) and saves output for the future use. It can process both numerical and non-numerical (arithmetic and logical) calculations. This information provided by the user to the computer is data. The information in one form which is presented to the computer is the input information or input data. Information is another form is presented by the computer after performing a process on it. This information is the output information or output data. It is believed that the Analytical Engine was the first computer which was invented by Charles Babbage in 1837. It used punch cards as read-only memory. Charles Babbage is also known as the father of the computer.
The basic parts without which a computer cannot work are as follows:
- Processor: It executes instructions from software and hardware.
2. Memory: It is the primary memory for data transfer between the CPU (Central Processing Unit) and storage.
3. Motherboard: It is the part that connects all other parts or components of a computer.
4. Storage: It permanently stores the data, e.g., hard drive.
5. Input Device: It allows you to communicate with the computer or to input data, e.g., a keyboard, mouse.
6. Output Device: It enables you to see the output, e.g., monitor, printer.
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