History of Computer and Generation

History of Computer


The history of computers has been starting with Abacus in 3000 BC. It is the beads on rods to count and calculate. Abacus is a counting analog machine made of wood sticks.
The frame has multiple movable rows, beads, similar objects, strung on a wire. Those were represent digits.


Slide Rule

The Slide Rule was invented by William Oughtred in the 1600s. It was a Mechanical Analog computer that worked on John Napier’s Algorithms.

Jacquard Machine

It was invented by (Joseph Marie Jacquard), a Frenchman during the 1800s. The Machine’s mechanism was the use of thousands of punch cards laced collectively every row of punched holes corresponded to a row of a textile pattern. Jacquard Machine was the first Manufacturing computer.

Analytical Engine/Difference Engine

The invented of Difference Engine was Charles Babbage. He is also known as the father of the computer. The analytical engine was the first mechanical calculator computer. That was capable of computer numerous sets of numbers and making hard copies of the results. Then,

Vacuum Tubes (the 1900s)

It was invented by John Ambrose Fleming a British Engineer. Vacuum Tube Computers are also knowns as First-Generation Computers. Vacuum Tubes are glass tubes with circuits inside. It has no air inside of them which protects the circuitry.

UNIVAC (Universal Automatic Computer)

It was invented by a Team or Group led by J.Presper Eckert. UNIVAC is a line of electronic digital stored-program computers starting with the product of Eckert and Mauchly Computer Corporation. Later, Grace Hopper Programmed UNIVAC. Then, he took Recipient of Computer Scientist’s first (Man of the Year Award).

First Transistor

The transistor was invented by William Shockley, Walter Houser Brattain, and John Bardeen.
It was developed in 1948 and won a Nobel Prize. First Transistor works on (On-Off) Switch. Later,

Second Generation (1965-1963)

The computer began to incorporate Transistors. Replaced Vacuum Tubes with Transistors.

Integrated Circuits (IC) Third Generations Computers

IC was invented by Jack Kilby, Edward Keojian, Robert Noyce, and Frank Wanlass. used in third Generations’ computers. Integrated Circuits are transistors, Resistors, and Capacitors integrated into a single chip. After that,

History of Computer and Generation Operating System

OS is a Software program required to manage and operate a computing device. Softwares instructions for computers.

Third Generation

Beginning of the third generation in (1964 to 1971). Third-generation computers based on ICs (Integrated Circuits), OS. And small size.

The First Microprocessor

it is also known as a Microchip. A microchip is a collection of electronic circuits on a small flat piece of silicon. It has four-bit chunks (four 0s and 1s).

Fourth Generations computers

It is v.small in size and uses microchip technology. These computers used the VSLI (Very Large Scale Integrated) circuits technology.

IBM PC (1981)

It was an IBM-Intel-Microsoft Joint Venture. And first Wide selling personal computer used in business. PC has 256K Random Access Memory (RAM) and one or two Floppy Disk Drives (FDD). Then,

Pentiums and Powers Macs

These were windows 95 was the first decent Graphic User Interface (GUI) for PCs. very fast and cheap.

21st Computing Generations

These computers are high in Speeds, Storage, and memory.

  1. Increased Networking, Speed in Internet
  2. Widespread use of CD-RW
  3. Wireless
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