Computer system concepts, characteristics, capabilities and limitations (1) (1).pptx

introduction of computer system

1. Computer system C oncepts, C haracteristics, C apabilities and L imitations Unit One 1.1

2. Concept of Computer System Parts of Computer System Computer Characteristics Limitations of computer system Functional Units of Computer System

3. Definition : Computer is an electronic programmable device which takes input data from input devices, store and processed it according to given instructions to produce result is also known as information that helps us to take important decisions. Computer

4. Basic Concepts of Computer:   A computer system  is a combination of hardware and software. I. Computer Hardware: The physical (tangible parts/components) of a computer that can be seen and touched are known as Hardware. The hardware consists of the physical components of a computer system like input devices (keyboard, mouse, scanner, etc.), output devices (monitor, printer, speaker, etc.), a processing device (CPU), and the storage device (Pen drive, hard disk, DVDs, etc.).

5. II. Software: Software is term used for computer program . A computer program is a step by step set of instructions that instruct the computer what to do and how to do .

6. Cont.. Application Software System Software Hardware OS Utility

7. Difference between System and Application s/w

8. INPUT: Enter Data and commands into computer PROCESS: The computer works on data OUTPUT: The computer shows the processed result Working Principle of Computer

9. Functional Unit Five functional units namely input unit, output unit , memory unit, arithmetic & logic unit and control unit.

10. Features of the computer system Speed  Accuracy Diligence Reliability Versatility Storage Capacity Automatic Multitasking

11. Cont.. Speed A computer works with much higher speed and accuracy compared to humans while performing mathematical calculations. Computers can process millions (1,000,000) of instructions per second. The time taken by computers for their operations is microseconds and nanoseconds. Accuracy Computers perform calculations with 100% accuracy. Errors may occur due to data inconsistency or inaccuracy. Diligence A computer can perform millions of tasks or calculations with the same consistency and accuracy. It doesn’t feel any fatigue or lack of concentration. Its memory also makes it superior to that of human beings.

12. Cont.. Versatility Versatility refers to the capability of a computer to perform different kinds of works with same accuracy and efficiency. Reliability A computer is reliable as it gives consistent result for similar set of data i.e., if we give same set of input any number of times, we will get the same result. Automation Computer performs all the tasks automatically i.e. it performs tasks without manual intervention. Memory A computer has built-in memory called primary memory where it stores data. Secondary storage are removable devices such as CDs, pen drives, etc., which are also used to store data.

13. Capabilities of Computer It is self Directing. The user merely feeds all the instructions to the computer at the start and later processed without any need for human intervention. Ability to store and retrieve information. The computer has the ability to remember and recall data when finds the need for them Ability to perform mathematical operations and solve complex formula at high speed and with great precision. Ability to perform logic operation.

14. Limitations of Computer There are some main limitations of computer is given below. Lack of common-sense Zero IQ No Feeling Computers can’t Decide Computers can’t Express their Ideas Computers can’t Implement Computers can’t Think

15. Name : Govinda Neupane Email: [email protected]