Would you like to merge this question into it? MERGE already exists as an alternate of this question.
Robert Mannell One of the earliest machines designed to assist people in calculations was the abacus which is still being used some years after its invention. In Blaise Pascal a famous French mathematician invented an adding machine based on mechanical gears in which numbers were represented by the cogs on the wheels.
His design contained the five key characteristics of modern computers: An American, Herman Hollerith, developed around the first electrically driven device. It utilised punched cards and metal rods which passed through the holes to close an electrical circuit and thus cause a counter to advance.
This machine was able to complete the calculation of the U. The Harvard Mark 1 was completed in and was 8 feet high and 55 feet long.
This machine was basically a small calculator. Inas part of the British war effort, a series of vacuum tube based computers named Colossus were developed to crack German secret codes. The Colossus Mark 2 series pictured consisted of vacuum tubes. Presper Eckert of the University of Pennsylvania developed these ideas further by proposing a huge machine consisting of 18, vacuum tubes.
Jan 15, · Write short notes on: a) Microcomputer b) Super computer a) Microcomputer: A micro computer is a computer with a microprocessor as its CPU. They are cheap, compact and can be easily accommodated on a study table. If you want to take notes on your notebook computer in school, you need to ask each individual professor or teacher. In many note taking situations you . Operating system manages overall activities of a computer and the input/output devices attached to the computer. It is the first software you see when you turn on the computer, and the last software you see when the computer is turned off.
It was a huge machine with a huge power requirement and two major disadvantages. Maintenance was extremely difficult as the tubes broke down regularly and had to be replaced, and also there was a big problem with overheating.
The most important limitation, however, was that every time a new task needed to be performed the machine need to be rewired. In other words programming was carried out with a soldering iron.
This allowed programs to be read into the computer and so gave birth to the age of general-purpose computers. This generation is often described as starting with the delivery of the first commercial computer to a business client. The main defining feature of the first generation of computers was that vacuum tubes were used as internal computer components.
Vacuum tubes are generally about centimeters in length and the large numbers of them required in computers resulted in huge and extremely expensive machines that often broke down as tubes failed. The Second Generation Transistors were capable of performing many of the same tasks as vacuum tubes but were only a fraction of the size.
The first transistor-based computer was produced in Transistors were not only smaller, enabling computer size to be reduced, but they were faster, more reliable and consumed less electricity. The other main improvement of this period was the development of computer languages.
Higher level languages also came into being during this period. Whereas assembler languages had a one-to-one correspondence between their symbols and actual machine functions, higher level language commands often represent complex sequences of machine codes.
Two higher-level languages developed during this period Fortran and Cobol are still in use today though in a much more developed form. The Third Generation In the first integrated circuit IC was developed in which a complete circuit of hundreds of components were able to be placed on a single silicon chip 2 or 3 mm square.A Short History of Computers and Computing.
Another feature of this period is that computer software became much more powerful and flexible and for the first time more than one program could share the computer's resources at the same time (multi-tasking).
The majority of programming languages used today are often referred to as 3GL's (3rd. Write a short note on latest two inventions in computer? Two of the latest inventions in the computing world are USB and DDR4. USB was invented by the USB Promoter Group while DDR4 was.
The modern computer took its shape with the advent of time.
It was around 16th century when the evolution of computer started. The initial computer faced many changes, obviously for the betterment. Writing notes by hand can be such a pain that more and more people are taking notes on the computer.
If you choose this method, a couple of things make life much easier: Whenever you begin using a new source, give the source a number. Jan 15, · Write short notes on: a) Microcomputer b) Super computer a) Microcomputer: A micro computer is a computer with a microprocessor as its CPU.
They are cheap, compact and can be easily accommodated on a study table. Write a Short Note on Modem and What are Modems? by: Editorial Staff, 6 Jun , Category: Computer & IT. What are Modems? – Write a short note on modem. The modem on receiving computer receives data in analog form. The incoming analog data id converted back into digital format to be used by computer.