1. The Computer is an electronic device that ___________.
a) Accepts (reads) data from the input device
b) Processes the data by performing calculations and operations on it as
per instructions
c) Generates (writes) the desired output results on to the specified output
devices.
d) All the above
2. The First generation of computers started using _______________ as the basic
components for memory and circuitry for CPU.
a) vacuum tubes
b) vacuum cleaner
c) vacuum pump
d) None of the above
3. CPU stands for___________________.
a) Control Processing Unit
b) Central Performance Unit
c) Central Processing Unit
d) Control Performance Unit
4. e-Governance uses a range of modern Information and Communication Technologies
such as_______________________
a) Internet
b) Mobiles/ Tablet
c) Laptops/ Computers
d) All the above
5. Assembly language is a representation of___________________.
a) Assembly Languages
b) Machine language
c) High level Languages
d) None of the above
Answers:
1. d
2 a
3. c
4. d
5. a
Assessment 2 (True/False)
1. The data input, given to the computer in the form of digits, alphabet, symbols, video,
audio.
a) True
b) False
2. Keyboard, mouse, light pen, microphone, touch screen, joystick are few output
devices.
a) True
b) False
3. Input devices are devices used to input data or information into a computer.
a) True
b) False
Answers:
1. a
2 b
3. a
Introduction to Computer
Major Components of Computer
Central Processing Unit (CPU)
Control Unit (CU)
Arithmetic Logic Unit (ALU)
Memory Unit
Input Unit
Output Unit
History of Computers
First generation computer (Not in use)
The First generation of computers started using vacuum tubes as the basic components for memory and circuitry for CPU (Central Processing Unit).
Second generation computer (Not in use)
Third generation computer
Third generation computer (Not in use)
Components of Computer System
• The Central Processing Unit (CPU) is the brain of the computer, it is a part of a computer which interprets and executes instruction
Functional block of CPU
The two components in CPU are,
Printer
Types of printer
There are different types of printers and those are,
Laser printing is an electrostatic digital printing process that rapidly produces high quality text and graphics by passing a laser beam over a charged drum to define a differentially charged image
Plotter
Software
Examples of computer software are
Note: Above mentioned software are of the respective vendors.
Types of Software
Application Software
Note: Above & below mentioned software/Logos are of respective vendors.
Types of Application software
Examples are MS Access, File maker pro and Apple works etc.
Educational software
Note: Above mentioned software are of respective vendors.
Application suites
Features of application software
Types of System Software
Operating System (OS)
Utility Programs
Computer – Number system
Decimal number system
• In the decimal number system, the successive position to the left of the decimal point represents units, tens, hundreds, thousands etc.,