Introduction To Computer VIVA

Q1. Define computer, explain characteristics of a computer.

Computer is an electronic machine that takes data and instructions, processes data according to the given instructions, gives results and stores them.

Characteristics of Computer :

1. Speed 2. Storage 3. Processing 4. Accuracy 5. Recalling

6. Communication 7. Versatile 7. No Feelings 9. No Intelligence

Q2. Explain uses of computer in different fields of life. OR Explain Impacts of Computer Technology on Society.

1. Uses of Computer at Home

2. Uses of Computer in Education

3. Uses of Computer in Industry

4. Uses of Computer in Business

5. Uses of Computer in Medical Field

Q3. Write down a note on types of computer.

Types of Computer

Computers can be divided into the following types on the basis of their working:

1. Analog Computers

Analog computer is used to measure continuous values. It measures a physical property like voltage, pressure, speed and temperature Analog computer is mainly used in the field of engineering and medicine. Examples Analog clock , Speedometer., Thermometer

2. Digital Computers

A digital computer works with digital data. Digital computer uses binary number system. Binary number system consists of only two digits 0 and 1. Today most of the computers used in offices and homes are Digital computers. Examples: Personal Computer-(PC),Digital Score board ,Digital watch

3. Hybrid Computers

A hybrid computer is a combination of both analog and digital computer. Examples:

Hybrid computer devices may calculate patient's heart function, temperature and blood pressure etc. This calculation may be converted into numbers and shown in digital form.
Hybrid computers are also used in spaceships and missile system.

Q4. Differentiate between Analog and Digital Computers

The difference between analog and digital computers is as follows:

Analog Computers		Digital Computers
1	Works on continuous values.	1	Works on discrete values.
2	Low memory.	2	Big memory.
3	Slow speed.	3	Fast speed.

Q5. Write a note on “Classification of Computers”

Classification of Computers

Computers are classified on the basis of size, speed and price as under:

1. Micro Computers

Micro computer is also called personal computer. It was introduced in 1970. It is used by one person at a time. Examples of personal computers are PC and Apple Macintosh.

2. Mini Computers

Mini computers were introduced in the 1960s. Mini computer is larger and more powerful computer than personal computer. Mini computer can serve up to 4000 connected users simultaneously. Examples of mini computers are:

• VAX-8800 • AS 400.

3. Mainframe Computers

Mainframe computers were introduced in 1975. A mainframe computer is a very large computer in size. It is more powerful than mini computer. Examples of mainframe computers are

• NEC 610 • DEC 10

4. Super Computers

Super computers were introduced in 1980s. Super computer is the fastest computer. Super computer is the biggest in size and the most expensive in price than any other computers. Examples of super computers are CRAY-XP, ETA-10, and Deep Blue.

Q9.Explain the basic components/parts of a computer OR Explain the basic computer organization

There are the following main basic parts of the computer:

Input Unit (To enter data and instructions)
Output Unit (To display processing results)
Central Processing Unit( CPU / Processor) (to process data and control operations and components of computer)
Memory Unit (to store data for processing)
Storage Unit (to store large amounts of data permanently)

What are Different Types of Input Devices With Examples

Topic: Different types of input devices of a computer system with examples, pictures and explanation: Topics Covered are: Definition of Input Devices Functions of Input Devices ( How input devices work? ) Examples of Input Devices Pictures / Images of different input devices Different Examples of Input Devices With Description Keybboard Mouse Trach Ball Trackpad Joy Stick Light Pen Microphone Scanner Graphic Tablet ( Digitizer ) Digital Camera Touch Screen ( I/O Device / Dual Device - Perform Both Functions input + Output ) INPUT DEVICES ( Definition ) Input devices are used to enter data and instructions into computer memory from external world. Input Device is a hardware part of the computer that is used to enter data and instructions into computer memory. The examples of input devices include: Keyboard, Mouse , Track ball, Track Pad, Joy stick, Touch Screen, Light pen, Scanner , Digital Camera, Microphone, Graphics tablet e...

Types Of Network Topology

Today, we will types of network topology . What is a Network Topology? Definition of Network topology is the shape of the network . It is the physical layout of connected devices in a network. It tells us how a network will look like. Network Topology ( Definition 2) : The way in which the connections are made among all the network entities is called the topology of the network. Network Topology ( Definition 3) :Network topology specifically refers to the physical layout of the network, e.g., the location of the computers and how the cable is run between them. Network Topology ( Definition 4) :The physical topology of a network refers to the configuration of cables, computers, and other peripherals. The characteristics of a network depend upon the network topology selected. types of network topology Explain different types of network Topology Different network topologies are as follows: 1. Bus Topology 2. Ring Topology 3. Star Topology 4. Tree Topolo...

Basic Structure of HTML Document

Basic Structure of HTML Document The basic structure of an HTML document is given below: <HTML> <HEAD> </HEAD> <BODY> </BODY> </HTML> The above format shows that an HTML document starts with <HTML> tag and ends with </HTML> tag. It is also clear that an HTML document consists of two main sections: Head Section Head section is used to specify a title of the web page, normally. There are some other uses of Head section too, like linking external style sheets and Java script code, etc. Head section starts with the <HEAD> tag and ends with the </HEAD> tag. <TITLE> tag is used to display a title of...

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