Computer is

computer definition
Computer comes from the Latin which means computare count. Because the extent of arable fields of computer science, experts and researchers in defining slightly different termininologi computer.

* According to Hamacher [1], the computer is an electronic calculating machine that quickly and can receive a digital input information, then process it in accordance with programs stored in memory, and generate output information.
* According to Blissmer [2], the computer is an electronic device that can perform several tasks as follows:


- Receive input
- Processing the input was in accordance with the program
- Keep the commandments and the results of processing
- Provides output in the form of information
* Sedangan Fuori [3] argues that the computer is a data processor that can perform large calculations quickly, including the calculation of arithmetic and logic operations, without human intervention.

To realize the conception of computers as a data processor to generate some information, then the required computer system (computer system) which consists of hardware elements, software and brainware. The third element of the computer system should be interconnected and form a unity. Hardware will not work if without the software, and vice versa. And both are no beneficial if there is no human (brainware) that operate and control it.

1. Hardware or Hardware: equipment that is physically visible and can djamah.
2. Software or Software: programs that provide instructions / commands to perform data processing.
3. Brainware: people who operate and control computer systems.

Characterization Computers

Latest literature on the computer doing computer-based classification tigal things: data processing, use, capacity / size, and generation.

Based on the data processed

1. Computer Analog
2. Computer Digital
3. Hybrid Computer

Based Penggunannya

1. Computers For Specific Objectives (Special Purpose Computer)
2. Computers for General Purpose (General Purpose Computer)

Based on the capacity and size

1. Micro Computer (Micro Computer)
2. Computer Mini (Mini Computer)
3. Computer Small (Small Computer)
4. Computer Medium (Medium Computer)
5. Computer Large (Large Computer)
6. Super Computer (Super Computer)

Based on the generation

1. First Generation Computers (1946-1959)
2. Second Generation Computers (1959-1964)
3. Third Generation Computers (1964-1970)
4. Fourth Generation Computers (1979-present)
5. Fifth Generation Computer

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