Devices used for data entry purposes are called Input Devices. Key Board, Mouse, Input Pen, Track Ball, Joystick, Microphones, Touch screen, Input Tablet are all Input Devices, but Key board remains most common. It is very similar to a typewriter key board. However, it has additional numeric key pads, functions keys etc.
Magnetic Ink Character Recognition (MICR): The encoding of documents with magnetic ink characters is limited to banking business. It consist of numbers plus some special characters that are pre-coded but could be read by banking personnel. The technology allows computers to read information (such as account numbers) off of printed documents. MICR characters are printed in special typefaces with a magnetic ink or toner, usually containing iron oxide.
Terminals: Data may be entered into computer through terminals. These are connected to the computer either by cables or by data communications or accumulate data for subsequent input.
Intelligent or Programmable or Logic Terminals: It essentially contains a small processor and a fairly small memory. Thus program can be stored, validate input, direct communications with a larger computer etc.
Non-Intelligent or Non-Programmable Terminals: It must be connected to a computer to accept data. Such inputs are processed immediately or subsequently. Type writers used in Timesharing Terminals are this type.
Remote Batch Terminals: It groups data into blocks and transmit to a computer. It consists of a remote console, input device, output device and used as a stand alone computer or job entry terminal.
Next: Output Devices.
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