Computer

 

Computer

Computer - A modern high-speed electronic device. Not much can be done with other electronic devices. But with the help of a computer, many kinds of work can be done perfectly. The two features of a computer are that it can store millions of pieces of data. It can follow very fast and accurate instructions. The phrase pc comes from the Greek phrase computer. 

Compute means to calculate. The word computer means calculator. (Origin of the word Computer from the Latin word Computer) In the past, calculations were done with a computer. Computer language is a pc language primarily based totally on digital signals. The computer publishes the results based on the instructions given to the computer with the help of computer language. This language of the computer is a computer program. 

Computers without programs are like inert matter. But in the present age, due to the versatile use of computers, the definition of a computer has become very widespread. Computers can no longer be confined to a limited definition. Definition of Computer- Computer is the process of solving a problem by converting a bunch of electric waves into its signal with the help of instructions given by the user.

Computer Features: The features of the computer are to display accurate results, complete speed, save data, automatic performance, tolerance, memory, etc.

 Use of computer: From home to work, office-court is not a place where the computer is not used, office work, business, school-college, university, various kinds of work.

Computers are used in industries, sports, recreation, shops, bank insurance companies, meteorological offices, space stations, etc.

Classes of computer:

Computers can be divided into four parts in terms of shape. 

Ø  Supercomputer.

Ø     Mainframe computer.

Ø     Minicomputer.

Ø     Microcomputer.

 A. Supercomputer: From a morphological point of view, this computer has a very strong and fast data processing capacity.  This computer is used in scientific research and large organizations. Example: cray-1, cray x-mp, cyber-205.

 B.  Mainframe computers: Smaller than supercomputers and larger than other computers. This computer works by connecting many receiving faces and emission faces, equipment, and various helpful memories.  This type of computer is used in large organizations. Example: univac1100 / 01, IBM 6120, IBM 4341, NCR n8370, data general cs30.

 C.  Minicomputer: The most popular computer is small in shape and cheap in price.  It is mostly used for official work, sports, and entertainment.  This computer is called a PC. Example:   IBM p.c, TRS 80, apple 64.

 D.  Microcomputer: Microcomputers can be divided into three parts.

•   Super microcomputer
•   Desktop computer
•   Laptop

1.  Super Micro: Super microcomputers are the most powerful microcomputers.  Another name for it is a workstation.  As the power of these computers is close to that of minicomputers, they are taking the place of mini frames.

 2. Desktop: It is easy to use and can be placed anywhere.  Such as IBM PC, Apple Macintosh.

 3.  Laptops: Small computers can be easily carried and used from the desktop.  This can be done by placing it on the col.  Laptops can be divided into two parts.  Such as notebooks and PDA.

 Notebook: Small diary and notebook-shaped laptop.  These are called power books.

PDA: Sub note Book PDA and a type of laptop.

Computers can be structurally divided into three.

• Digital computer.
• Analog computer.
• Hybrid computer.

1. Digital computer: This computer receives information through letters/numbers and publishes the results.  This computer performs mathematical and logical functions perfectly.  Collects data based on binary numbers.

 2. Analog computer: This computer uses an analog electrical signal.  Sun, heat, pressure electric waves are received as analog computer input and the results are plotted with a plotter.  Analog computers are used in chemical, petroleum, and food processing and industries.

 3.  Hybrid computer: A computer consisting of a combination of a digital and analog computer is called a hybrid computer.  Hybrid computers are used in scientific work.

 

Different parts of the computer:

These are the basic parts of a computer

1. CPU: Central Processing Unit.  Input and output data are processed and sent to the output.

2. Monitor: The monitor that is used to display the processing data through the CPU.

 3. Keyboard: With the help of the keyboard, writing, data input, and commands are given.

 4. Mouse: It gives various commands to the CPU.

 5. RAM: Random access memory.  Temporary memory device.

 6. ROM: Read-only memory. Permanent memory device.

 7. USB port: Input-output data is exchanged through it.

 8. Motherboard: It connects CPU, keyboard, mouse, monitor, RAM, ROM, memory card, graphics card, and various USB ports.

 

9. Pen drive: A pen drive is a type of memory device.  Which stores information.

 

Input and output units: The workings of a computer can be divided into two parts.

 

1. Input unit: receiving instructions.  For example keyboard and mouse.

 

2. Output Unit: Display of results.  For example CPU and monitor.

 

Input device:

Input devices are the means of human communication with computers.  Any data is converted into a binary electronics signal and sent to the CPU.

 

Output device:

The electronics signals coming from the input device are converted into image-based, alphabet-based, math-based, word, and picture-based, etc.