CLASSIFICATION OF COMPUTERS
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The document discusses different types of computers: - Analog computers represent data with continuous physical quantities like voltage. Accuracy depends on precision of measurements. - Digital computers use discrete values like binary digits to represent data symbols. They are used for business/science data processing and storing large quantities of data magnetically. - Hybrid computers combine analog and digital, using analog input converted to digital for processing and accuracy. - Other computer types discussed are mainframes for CPU/I/O intensive jobs, mini computers for real-time multi-user apps, microcomputers for simple tasks, and supercomputers for large data and intensive computing.
CLASSIFICATION OF COMPUTERS
- 2. Analog Computer Hybrid Computer Digital Computer
- 3. In this computer represents data as numbers or separate unit’s. Digital computer operates an decimal digits that represents either discreat data or symbols. It takes input and give output in the form of numbers, letters and special characters. This type computers are generally used for business and scientific data processing and also had a unique ability that is storing large quantities of data. In this computer magnetic media is used as storage device.
- 4. This type of computer represents number by a physical quantity that is they assign numeric values by physically measuring some actual property, such as the length of an object, an angle created by two lines or the amount of voltage passing through a point in an electric circuit. Analog computer derive all their data from some of measurement. Though effective for some applications this method of representing number is a limitations of the analog computer. The accuracy of the data used in an analog computer is directly related to the precision of its measurement
- 5. Hybrid computer combine the most desirable feature of both analog and digital computer. They have the speed of Analog Computer and the accuracy of Digital Computer. They usually used the special problems in which input data derived from measurements is converted in to digits and processed by computers.
- 6. Main frame Computer Mini Computer Micro Computer Super Computer
- 7. Faster than Mini Computer and have larger memory used in CPU intensive or I/O intensive job,like In scientific and business applications and to process high volume of data in large business applications.. Example-IBM-370 and IBM-S/390, DEC VAX-8800, CPC-7600, UNIVAC-1110
- 8. Relatively faster and low cost compared to mainframes, higher than PCs. Design for real time dedicated multi user applications. Example-IBM-17, HP-3000 DECPDP-11
- 9. Slow, cheap significant computing power. Use of INTEL chips. Single processor system which can supports the simple tasks like WP,ESS,DBMS etc Example-PS 386, 486 PENTIUM (P-1, 2 ,3, 4)
- 10. Large in size and large memory compared to all other computers. Ideal for high end computing applications involving large volume of data and intensive computing use- INTEL chips. These computers are design for ultra high performance tasks such as encryption, cracking, creation of animation and for designing all knowledge based systems. Example- IBMs Deep Blue, CDC cyber family and CRAY X-mp/26
- 11. Internet IT Books of SMU