Classwork Series and Exercises {Computer Science – JSS1}: History Of Computer

Computer Science,JSS 1,Week 2

Topic: History Of Computer

Before the invention of computer, counting of figures was done with finger, and also the use of toe. Then later on man shifted to the use of stones. The stones often became problem sometimes, then another means were cropped up until mechanic and electronic devices were discovered.

Development of computer mechanical devices are these devices that porter their task without making use of electricity. Examples are

1. Abacus: Abacus was developed in china. It is a wooden frame with string on which colorful beads are stung on.
2. Slide Rule: Slide rule is used for performing calculation which involves multiplication and division. The use of slide rule is only accurate to 3 or 4 of decimal place. It is also used for operation that involves raising number to a given power 2³

 Electronic Devices

These are devices that used low voltage to power, supply and also to perform their task. Such as

1. Napier Logarithm (Napier Bones): in the 1617, John Napier ( a mathematician) invented a device called Napier bones. He used it to simplify lengthy calculation by first reducing them to addition and also simplifies them.
2. Pascal Line: in 1642 blasé Pascal invented the first true adding machine. He invented it to reduce the numerical labour involved in his father work. This devices is basically use for arithmetic operation such as adding and subtraction.
3. Charles babbage Analytic Machine: in 1832, Sir Charles Babbage built a machine call DIFFERENCE ENGINE. He later designs another machine called ANALYTIC MACHINE IN 1833. He invented this machine (analytical machine) for more complex calculation bur he died and could not complete the task. His friend ADA LOVE LAC E showed how the machine could e used to do some particular calculation. It is often thought that sir Charles Babbage is the inventor of the computer, while ADA LOVE LACE is the first programmer. This machine has four parts.

• A mill for calculating
• A store for holding instructors, immediate and final results
• An operator for carrying out instructions
• A device for reading and writing date on punch card.

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