Appraising the Secretaries at Sweetwater University Essay

1.What is com solelyoting machine?-Computer is an electronic device that is designed to work on with Information.The term computer is derived from the Latin term comput atomic number 18, this means to calculate.Computer brook non do anything without a Program.it represents the decimal numbers through a arrange of binary digits. Computer is an advanced electronic device that takes raw information as input from the user and processes these data under the control of mint of instruction manual (called program) and gives the result (output) and saves output for the future use. It rear end process some(prenominal) numerical and non-numerical (arithmetic and logical) calculations.2.Four functions of computer-The four basic functions of a computer ar input, touch on, output and storage. Input is the information which is entered into the computer. Processing is performing operations on or manipulating data. Output is the result of the data processing. Storage refers to devices th at can go on the data when the computer is deactivated.3.Computer system-A system of interconnected computers that share a central storage system and various peripheral devices such as a printers, scanners, or routers. Each computer connected to the system can operate independently, but has the ability to communicate with other external devices and computers.4.Classifications of computer according to 3 devices (1) Micro computers These computers use a microprocessor splintering and this chip is employ instead of CPU means that this microprocessor chip works as a CPU. These computers are also called personal computers. Two major types of these computers are laptop or Desktop computers. Only one user uses these computers at time thats why they are also known as personal computers. (2) miniskirt Computers These are powerful computer. These computers come into existence in 1960s at that time mainframe computer was very costly. Mini computers were available in cheap prices, so users start using it.(3) mainframe computer Computer It as a very powerful and large computer. You can getidea of its power as it can handle processing of many users at a time. conclusions are use to connect a user to this computer and users submit there task through mainframe. Terminal is a device which has exposeboard and a screen. By using terminal users put inputs into the computer and get the output through screen. (4) Super Computers As the heel super computer specifies that these are most powerful computers even than mainframe. Actually, when we optimise a mainframe computer then we get super computer.5. explanation of computer The word computer originally implied a person, who, under instructions from a mathematician, performed mechanical calculations. Mechanical calculating devices such as the abacus were oft put to use to aid this process. At the end of the Middle Ages, math and engineering in Europe received a considerable boost, thereof leading to the invention of num erous mechanical calculating devices. The technology for clockwork was true by the early 17th degree Celsius. The period between the early nineteenth century and early 20th century saw the suppuration of a number of technologies which would be vital for the development of the digital computer subsequent on. Some examples are the punched card and the valve. Charles Babbage was the first person to design a fully programmable computer as early as 1837.However, he was futile to actually construct his computer due to a variety of reasons. elongate computers were increasingly used in the first half of the 20th century for a number of scientific computing needs. However, they became obsolete after the development of the digital computer. The first digital computer was the Atanasoff pluck Computer . It used a binary system of arithmetic, parallel processing, a separation of retentivity and computing functions and regenerative memory. Binary math and electronic circuits both of whic h are used in todays computers were first used in the Atanasoff Berry Computer. In the 1930s and 1940s, newer and more efficient computers were continuously developed. Gradually, they came to possess the key features which are present in modern day computers digital electronics and tractability of programming.Among the more important machines to be developed during this time, the American ENIAC was prominent. It was a worldwide purpose machine, but had an inflexible architecture. Later a far gilt-edged technique known as the stored program architecture wasdeveloped. It is the foundation from which all modern computers are derived. Throughout the 1950s, computer design http//www.online-computers.info was primarily valve driven. This was by and by replaced by transistor-driven design in the 1960s. Transistor-based computers were smaller, faster and cheaper, and hence commercially viable. co-ordinated circuit technology, adopted in the 1970s enabled computer production be to hi t a new low, so that even individuals could afford them. That was the give of the personal computer, as it is known today.6.Examples of Input,Output Devices*Manual- Abacus,Slide rule,Leibinizz Calculator,Napiers bones,Pascal calculator,Babbages analytic engine *Electronic-Unversal automatic computer,Electronic delayed storage automatic calculator,Electronic discrete inconsistent automatic computer,Electronic numerical integrator and calculator,Atanossof-Berry computer *Electromechanical-Automatic sequence controlled calculator,Jacquards Loom, Holleriths punched-card machine