Computer
A computer is an electronic device, operating under the control of instructions stored in its own memory that can accept data (input), process the data according to specified rules, produce information (output), and store the information for future use1.
Functionalities of a computer
Any digital computer carries out five functions in gross terms:
- Takes Data as Input
- Stored the data / instruction in memory and use them when required.
- Process the data and convert its in to useful information.
- Generate the output.
- Controls all the above four step
Computer Components
Any kind of computers consists of HARDWARE AND SOFTWARE.
History and Generation of Computers
Computers are made up of many parts, and each one of them is a unique invention on its own. In this timeline we will take a look at many of these parts, and how they contributed to the computers we have today.
ABACUS “2500
Abacus is the first kwon calculating machine used for counting. It’s made of beads and rods. It’s mainly use for addition, subtraction, multiplication, and division.
NAPIER’S BONES
Napier’s Bones was invented by Jonr Napier, a Scottish Mathematician.
It’s also make for calculation.
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THE SLIDE RULE
It was invented by Willam Oughtred. The Slide Rule is embodied by the two sets of scales that are join together with a marginal space between them.
THE ROTATING WHEEL CALCULATOR
It was first developed by a French Philosopher, Blaise Pascal. It consists of gears and levers. This is a predecessor to today’s electronic calculator.
THE DIFFERENCE ENGINE “1822 AD”
It built by Charles Babbage, British Mathematician and engineer. Babage is calledthe “Father of Today’s Computer”
HOILERITH TABULATING MACHINE “1890 AD”
It was developed by Herman Hollerith. It was design by using punched cards.
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