Computer history generally refers to the generations of computer development.
Generation of Computer: This is the stages of development of computer.
First Generation Computers (1941-1956)
– First generation computers use vacuum tube technology &generate much
– First generation computers are slow in speed
– The storage is limited in capacity
– Manual method is used in entering data into the machine
– They were very big in size.
Second Generation Computers (1956 –1963)
– Second generation computers use transistor technology & generate lesser
heat compared to the first generation.
– It makes use of external storage.
– They were faster than first generation computers
– Instructions were coded in assembly language.
– They were big but smaller than first generation computers.
Third Generation Computers (1970 –1980)
– Third generation computers makes use of IC technology and generates lesser heat.
– Its instructions were coded in high level language.
– They were faster and more reliable.
– They were smaller in size than 2nd generation computers.
Fourth Generation Computers (1980s –1990s)
– Fourth generation computers use microchips technology or very large integrated circuit
– It generates lesser amount of heat.
– It makes use of object–oriented programming.
– It is faster and reliable.
– Introduction of software packages.
Fifth Generation computer (21st Century and Beyond)
– Introduction of Ballistic Transistor and Single Electron: Transistors which can increase the speed of microprocessor by ten million times.
– Introduction of Artificial Intelligence (AI) Robots: Artificial Intelligence is used to link human and animal behavior in man-made machine.
– Smaller Devices: It led to the introduction of very small computers like a wallet.
CONCEPT OF NUMBER SYSTEM IN COMPUTING
A number system is defined by the base it uses. The base is the different symbols required by the system to represent any of the endless series of numbers. The number system in use worldwide in mathematical notation today is the decimal system, which is a base 10 system.