Computer
The computer is a programmable program designed to read and implement a sequence of instruction lists that make it arithmetic and logical operations based on binary numbers. Basically, computers consist of short-term memory and long-term memory for data storage; and a central processing unit that functions as a control unit and contains an arithmetic logic unit. Accessory can be connected so that the computer can receive external input and output displays. The computer processor unit performs a series of commands that make it read, manipulate and then store data. The test and landing instructions allow it to move within the program space and therefore implement different instructions as a function of the current position of the machine or its environment. Computers can also respond to interruptions that make it execute certain command sets and then resume what they are doing before interrupt. The first electronic computer was developed in the middle of the 20th century. With such size of a large room, it requires much power like several hundred modern personal computers.