A computer system chapter presentation new full typed
- 2. NAME:- SMRUTI RANJAN LENKA CLASS:- IX SECTION:- B ROLL NO.:- 36 SUBJECT:- COMPUTER
- 3. Introduction to computer Uses of computers in everyday life Applications of computers Limitation of a computer Functioning of a computer Types of computers The binary concept Performance of computer The binary concept Memory measurement
- 4. A computer is a device that manipulates data according to a set of instructions called program. A computer can use any program to carry out a wide range of useful tasks. Its purpose is to speed up problem solving and increase productivity.
- 5. • The applications of computers are as follows :- • Document typing:- computers are very helpful for word processing. You can correct your mistakes with the help of spell check and take out as many printouts as you like. • Entertainment:- computer can be helpful in entertaining us in many different ways:- a} playing games:- you can play games on a computer that help us to be attentive, observant and develop reasoning. • General knowledge:- computers help us in refining our general knowledge with the help of educational software, explaining concepts through animation and multimedia.
- 6. Education Industries Banking sector Hospitals Transportation Insurance Science and engineering Business Telecommunications Entertainment Railways and airlines Desktop publishing
- 7. Computer is a very intelligent machine but it also suffers from many limitations such as:- 1) Computers cannot interpret the data they generate. 2) Computers cannot detect if the operator feeds any wrong data to it. 3) Computers cannot decide how they are to be programmed or provide their own input. 4) computers cannot implement the decision that they suggest.
- 8. • A computer performs :- 1) Accepts the data- input 2) Processes the data- process 3) Provides results- output 4) Stores result- storage After getting the input ,CPU processes the mainly four functions data and provides result as an output. OUTPUTPROCESSINPUT
- 9. To perform these operations a computer requires following units:- 1) Input unit 2) Processing unit 3) Output unit 4) Storage unit INPUT OUTPUT MEMORY CU A L U
- 11. Super computer are those computer which are designed for scientific job like whether forecasting and artificial intelligence etc. They are fastest and expensive. A super computer contains a number of CPU which operate in parallel to make it faster. It also known as grand father computer. Application – whether forecasting, weapons research and development.
- 12. Mainframe computers are those computers that offer faster processing and grater storage area. The word “main frame” comes from the metal frames. It is also known as Father computer. Application – Host computer, Central data base server.
- 13. These are also small general purpose system. They are generally more powerful and most useful as compared to micro computer. Mini computer are also known as mid range computer or Child computer. Application :- Departmental systems, Network Servers, work group system.
- 14. The most common types of computer is personal computer- a personal computer that is designed to sit on a desk or table. These are the systems you see all around you, in school, homes, and office. Today’s personal computers are more powerful than those of just a few year’s ago. Not only do these machine enable people to do their jobs with greater ease and efficient, but they can be used to communicate, produce music, edit photographs and videos, etc. the main components of the personal computer is the system units.
- 15. The clock speed is measured in megahertz and is the main element in determining the speed of the processor. Computer speed is also by the no. of instructions per second. Hertz is the unit of frequency that measuresthe no. of cycles per second in a periodic signal; a megahertz is equal to one million hertz.
- 16. BINARY CONCEPT Computers cannot understand language that you use in your daily life. It understands only machine language . Machine language is made up of a combination of 0s and 1s. The digits 0 and 1 are called binary digits and forms binary codes.
- 17. 1 Bit = Binary Digit 8 Bits = 1 Byte 1024 Bytes = 1 KB (Kilo Byte) 1024 KB = 1 MB (Mega Byte) 1024 MB = 1 GB(Giga Byte) 1024 GB = 1 TB(Terra Byte) 1024 TB = 1 PB(Peta Byte) 1024 PB = 1 EB(Exa Byte) 1024 EB = 1 ZB(Zetta Byte) 1024 ZB = 1 YB (Yotta Byte) 1024 YB = 1 (Bronto Byte) 1024 Brontobyte = 1 (Geop Byte) Geop Byte is The Highest Memory Measurement Unit!