1. Modern Computer System
1.1. electronic device,operating under the control of instruction stored at it own memory,accept data,process the data,produce result,store data and result
1.2. in brief,it is the device that receives,stores,and process information
2. Hardware
2.1. computer contains many electric,electronic,and mechanical components known as hardware
2.1.1. common Desktop Hardware
2.1.1.1. speaker
2.1.1.2. screen
2.1.1.3. keyboard
2.1.1.4. system unit
2.1.1.5. mouse
3. Software
3.1. called as a program,tell the computer what task to perform and how to perform them
4. Types of computer
4.1. Supercomputer
4.2. Mainframe Computer
4.3. Midrange Computer
4.4. Personal Computer
5. Have 6 generation
5.1. 1.mechanical era
5.2. 2.vacuum tube
5.3. 3.transistor
5.4. 4.integrated circuit based
5.5. 5.VLSI microprocessor based
5.6. 6.ULSI technology
6. Von Neuman Architecture
6.1. data stored in main memory while being processed
6.2. sequential processing of introduction
6.3. binary data processing
6.4. consists of CPU,memory and I/O system
6.4.1. 5 main components
6.4.1.1. 1.CPU
6.4.1.1.1. CU (control unit)
6.4.1.1.2. ALU (arithematic/logic unit)
6.4.1.1.3. interface unit
6.4.1.2. 2.Main Memory ( RAM)
6.4.1.2.1. short-term memory
6.4.1.3. 3.I/O Devices
6.4.1.3.1. input device :-
6.4.1.3.2. output device :-
6.4.1.4. 4.Mass Storage
6.4.1.4.1. hard drive
6.4.1.4.2. optical drive
6.4.1.4.3. magnetic tape
6.4.1.5. 5.Interconnection network (bus)
6.4.1.5.1. bundle of wire carry signal and power between components
7. Networks and the Internet
7.1. network
7.1.1. collection of computer and device connected together,via communication device and transmission device
7.2. internet
7.2.1. worldwide collection of network that connects million of business,educational institutions and individual