Post on 24-Jun-2015
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Welcome to Presentation
Historical Evaluation of Computer
Functions of Computer
Characteristics and Limitations Of Computer
Generations Of Computer
Classification Of Computer
Computer System and Technology
Software
Operating System
Computer Language
Computer
“The computer was born to solve problems that did not exist before.”
Functions Of Computer
Accept Data
Process Data
Output Data
Characteristics Of Computer
Faster
Diligence
Accurate
Vast Memory
Reliability
Various Performance
Limitations Of Computer
Costly
Dependent
Need of an expert programmer
Non Standardization
Artificial
Various Generations of ComputerFirst generation computer(1951-1959): Use of vacuum tubes
Second generation computer(1959-1965): Use of transistors
Third generation computer(1965-1971): Use of IC
Forth Generation computer(1971-Current year): Use of large scale of Integration
Fifth Generation computer(future Generation): Use of ULSI
Classification of Computers
Digital ComputerMicro computer
Mini computer
Mainframe Computer
Super computer
Relationship Between System and Technology
Technology: Composed of hardware, software, data and telecommunication
System: Group of interrelated components
InputProcessingOutput
Feed back: Data about the performance of a system
Control: Monitoring and evaluating feedback
Components of Computer system
Hardware
Software
User
Data
Major Types of Software
Operating System
An integrated set of programs that acts as a basic platform for the hardware applications programs to run.
Functions of operating system
Multiprocessing Operating System
Classification of Operating System :
Batch/Off line Mode Operating System
Time sharing operating system
Multitasking Operating System
Distributed operating system
Virtual storage operating system
Real time Operating System
Computer Language
Language
Low level Language
1. Machine language
2. Assemble language
High level language
Machine language: Directly executed without any translation. Instruction written in what can understand by processor.
Assemble language: Instructions are written in codes and symbolic address.
Low Level Language
Easily Understandable for ComputerExecute FastMachine DependentInefficient in error findingHard for logic development
High Level Language
Human understand easilySlow in executionSlow in executionEasy in error findingEasy in developing logic
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