Appraising the Secretaries at Sweetwater University Essay

1.What is computation machine?-Computer is an electronic device that is designed to work with Information.The boundary reckoner is derived from the Latin term comput ar, this means to calculate.Computer can not do anything without a Program.it re fork overs the decimal numbers through a cosmic string of binary digits. Computer is an advanced electronic device that takes raw data as input from the substance abuser and attendes 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 both mathematical and non-numerical (arithmetic and logical) calculations.2.Four functions of estimator-The four basic functions of a figurer are input, affect, output and storage. infix 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. retention refers to devices that can retain the data when t he computer is deactivated.3.Computer system-A system of interconnected computers that share a commutation 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 utilize instead of processor means that this microprocessor chip works as a CPU. These computers are also called personal computers. Two study 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) Mini Computers These are powerful computer. These computers flummox into existence in 1960s at that time mainframe computer was very(prenominal) costly. 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 stayidea 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 banish there task through mainframe. Terminal is a device which has keyboard and a screen. By using endpoint 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 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 Middle Ages, mathematics and engineering in Europe received a considerable boost, thusly leading to the invention of numerous mechanical calcula ting devices. The technology for clockwork was developed by the early seventeenth century. The period between the early 19th century and early 20th century saw the evolution 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 electronic circuits both of which are used in todays computers were first use d in the Atanasoff Berry Computer. In the 1930s and 1940s, in the altogetherer 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 flexibility of programming.Among the more important machines to be developed during this time, the American ENIAC was prominent. It was a general purpose machine, but had an inflexible architecture. Later a far superior proficiency 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. merged circuit technology, adopted in the 1970s enabled computer production costs to hit a new low, so that even individuals could af ford 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