Appraising the Secretaries at Sweetwater University Essay Example for Free

Appraising the Secretaries at Sweetwater University Essay1.What is computing device?- information processing system is an electronic device that is designed to work with Information.The term calculating machine is derived from the Latin term computare, this nub to calculate.Computer can not do anything without a Program.it represents the decimal government issues through a string of binary digits. Computer is an advanced electronic device that takes knifelike data as input from the user and processes these data under the control of set of instructions (called program) and gives the result (output) and saves output for the future use. It can process twain numerical and non-numerical (arithmetic and logical) calculations.2.Four functions of information processing system-The four basic functions of a computer are input, processing, output and memory. Input is the information which is entered into the computer. Processing is performing operations on or manipulating data. Outp ut is the result of the data processing. Storage refers to devices that can retain 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 chip and this chip is used instead of CPU content 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 iodine user uses these computers at time thats why they are also cognise as personal computers. (2) Mini Computers These are powerful computer. These computers come into existence in 1960s at that time mainframe computer was very c ostly. Mini computers were available in cheap prices, so users start using it.(3) Mainframe 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. Terminals are used to connect a user to this computer and users submit there task through mainframe. Terminal is a device which has keyboard and a screen. By using terminal users put inputs into the computer and get the output through screen. (4) Super Computers As the name super computer specifies that these are most(prenominal) powerful computers even than mainframe. Actually, when we optimize a mainframe computer then we get super computer.5. History 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 often put to use to aid this process. At the end of the spirit Ages, mathematics and engineering in Europe received a considerable boost, thus leading to the invention of numerous mechanical calculating devices. The technology for clockwork was authentic by the early 17th century. The period between the early 19th century and early 20th century saw the development of a number of technologies which would be vital for the development of the digital computer later 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 unable to actually construct his computer due to a variety of reasons. Analog 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 Berry Computer . It used a binary system of arithmetic, parallel processing, a separation of memory and computing functions and regenerative memory. Binary math and ele ctronic circuits some(prenominal) of which 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 ingest the key features which are present in in advance(p) day computers digital electronics and flexibility of programming.Among the more important machines to be developed during this time, the American ENIAC was prominent. It was a popular purpose machine, but had an inflexible architecture. Later a far superior 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 later replaced by transistor-driven design in the 1960s. Transistor-based computers were smaller, faster and cheaper, and hence commercially viable. Integrated circuit technology, pick out in the 1970s enabled computer production costs to hit a new low, so that even individuals could afford them. That was the birth 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 Analytical engine *Electronic-Unversal automatic computer,Electronic delayed storage automatic calculator,Electronic discrete variable automatic computer,Electronic numerical integrator and calculator,Atanossof-Berry computer *Electromechanical-Automatic sequence controlled calculator,Jacquards Loom, Holleriths punched-card machine