Unit 1: Introduction To Computer explores the foundational concepts of information technology, including the characteristics, classifications, and historical development of computers. This unit outlines the differences between digital and analog computers and discusses the evolution of computing technology through various generations. It highlights the significance of computers in business, education, and everyday life, emphasizing their role in data management and decision-making. Prepared by Manila Tiwari, this unit serves as an essential resource for students and professionals seeking to understand the basics of computer systems and their applications.

Key Points

  • Explains the characteristics and classifications of computers
  • Covers the history and generations of computing technology
  • Discusses the role of computers in business operations and data management
  • Introduces digital and analog computers with practical examples
Sewang Rai.2
Author: Manila Tiwari More by Manila Tiwari Data Communication and Computer Networks – Unit 5.1 Data Communication and Computer Networks – Unit 5.1
68 pages
Language:English
Type:Textbook
Film and TV
Sewang Rai.2
Author: Manila Tiwari More by Manila Tiwari Data Communication and Computer Networks – Unit 5.1 Data Communication and Computer Networks – Unit 5.1
68 pages
Language:English
Type:Textbook
Film and TV
229
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Introduction to Information
Technology
Unit 1: Introduction To Computer(4 hrs)
Prepared By: Manila Tiwari
Introduction To Information Technology: BIT I
Chapter
Contents
• Introduction
• Characteristics of Computer
• Classification of Computer
• Digital and Analog Computers
• History of Computer
• Generations of Computer
• The Computer System
• Application of Computers
2
Prepared By: Manila Tiwari
Introduction To Information Technology: BIT I
What is IT?
3
• Information Technology (IT) is a field that involves the use of computers,
software applications, data storage systems, networking devices, and
supporting infrastructure to create, process, store, secure, and exchange
electronic information.
• It plays a vital role in managing data and information efficiently within
organizations.
• IT is widely used in business operations to support communication,
automate processes, improve productivity, ensure data security, and enable
effective decision-making, rather than being focused on personal or
entertainment purposes.
Prepared By: Manila Tiwari
Introduction To Information Technology: BIT I
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End of Document
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Figures

Introduction To Information Technology: BIT I
Introduction to Information Technology - Unit 1: Introduction To Computer — Scope/Application field of Information System
Introduction to Information Technology - Unit 1: Introduction To Computer — Scope/Application field of Information System
Introduction to Information Technology - Unit 1: Introduction To Computer — Scope/Application field of Information System
Introduction to Information Technology - Unit 1: Introduction To Computer — Introduction to Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Introduction to Computer
Prepared By: Manila Tiwari
Prepared By: Manila Tiwari
C-Common
Introduction to Information Technology - Unit 1: Introduction To Computer — Introduction to Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction To Information Technology: BIT I
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Inputting
Processing
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Storing
Controlling
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction To Information Technology: BIT I
Inputting
Processing
Prepared By: Manila Tiwari
Prepared By: Manila Tiwari
Introduction To Information Technology: BIT I
Processing
Outputting
Storing
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Introduction To Information Technology: BIT I
Introduction to Information Technology - Unit 1: Introduction To Computer — Functions of Computer
Outputting
Storing
Introduction to Information Technology - Unit 1: Introduction To Computer — Characteristics of Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Characteristics of Computer
Prepared By: Manila Tiwari
Prepared By: Manila Tiwari
Computers are classified according to
Introduction to Information Technology - Unit 1: Introduction To Computer — Types of computer
Introduction to Information Technology - Unit 1: Introduction To Computer — Classification of computers Based on work:
Introduction To Information Technology: BIT I
Introduction to Information Technology - Unit 1: Introduction To Computer — Classification of computers Based on work:
Introduction to Information Technology - Unit 1: Introduction To Computer — 2. Analog Computers
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Hybrid Computers
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Hybrid Computers
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Hybrid Computers
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Hybrid Computers
Prepared By: Manila Tiwari
Programmed Data Processor (PDP 11), IBM (8000 series) are some of the
Introduction to Information Technology - Unit 1: Introduction To Computer — 2. Mini Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Mainframe Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Mainframe Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Mainframe Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Mainframe Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Mainframe Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Mainframe Computer
Less powerful and generally less expensive than super computers and
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Mainframe Computer
Introduction to Information Technology - Unit 1: Introduction To Computer — 3. Mainframe Computer
A single super computer has capacity of 4000 microcomputer
Can cost tens of millions of dollars and consume enough electricity to power dozen of homes
Fig. Abacus
Fig. Abacus
The history of computer begins with the birth of
Fig. Abacus
Fig. Napier’s Bones
Fig. Napier’s Bones
Fig. Napier’s Bones
Prepared By: Manila Tiwari
Fig. Napier’s Bones
Fig. Napier’s Bones
Fig. Slide rule
Fig. Pascaline
Fig. Pascaline
Fig. Pascaline
It was a wooden box with a series of gears and
Fig. Pascaline
Fig. Pascaline
Fig. Leibnitz wheel
Fig. Leibnitz wheel
Fig. Leibnitz wheel
Fig. Leibnitz wheel
Fig. Punched Card
Fig. Analytical Engine
Fig. Analytical Engine
Fig. Analytical Engine
Fig. Analytical Engine
An English man Charles Babbage built a mechanical

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FAQs

What are the main characteristics of computers?
The main characteristics of computers include speed, accuracy, diligence, storage capability, and versatility. Computers can process data at incredibly high speeds, performing millions of instructions per second. They maintain a high degree of accuracy, provided the input is correct, and can perform long and complex calculations without fatigue. Additionally, computers have substantial storage capabilities, allowing them to store large volumes of data and retrieve it efficiently. Their versatility enables them to perform various tasks simultaneously, making them suitable for a wide range of applications.
What are the functions of a computer?
The functions of a computer include inputting, processing, outputting, storing, and controlling. Inputting refers to entering data into the computer system using input devices. Processing involves performing mathematical and logical operations on the input data. Outputting is the process of delivering the processed information through output devices like monitors. Storing allows computers to save data and programs permanently, making them retrievable when needed. Lastly, controlling involves the CPU managing all input and output devices, application programs, and memory units.
How are computers classified based on their work?
Computers are classified based on their work into digital, analog, and hybrid computers. Digital computers utilize discrete values to represent data, processing information using binary digits (0s and 1s). They are commonly used in homes and offices due to their speed and accuracy. Analog computers, on the other hand, measure physical magnitudes like voltage and temperature, and are used for real-time applications. Hybrid computers combine features of both digital and analog computers, allowing them to solve complex mathematical problems while performing calculations with discrete quantities.
What is the significance of the input-process-output concept in computers?
The input-process-output concept is crucial in understanding how computers function. It describes the flow of data within a computer system, where data is first accepted as input via input devices. This data is then processed according to specific instructions, resulting in output information. The output can take various forms, such as text, sound, or images, and is displayed or printed as needed. Additionally, the concept emphasizes the importance of storage, where input data, instructions, and output are kept in secondary storage devices for future retrieval.
What are the advantages and disadvantages of using computers?
The advantages of using computers include their high speed, versatility, and significant storage capacity. They can perform tasks much faster than humans and handle multiple operations simultaneously. However, there are disadvantages as well, such as the potential for eye strain from excessive use, vulnerability to viruses and hacking, and dependency on electricity. Furthermore, over-reliance on computers can lead to a decrease in human skills and capabilities.
What is Information Technology (IT) as defined in the document?
Information Technology (IT) is defined as a field that involves the use of computers, software applications, data storage systems, networking devices, and supporting infrastructure to create, process, store, secure, and exchange electronic information. IT plays a vital role in managing data efficiently within organizations, supporting communication, automating processes, improving productivity, ensuring data security, and enabling effective decision-making.
What are the different generations of computers mentioned in the document?
The document outlines five generations of computers, each marked by significant technological advancements. The first generation (1940-1956) used vacuum tubes, while the second generation (1956-1963) introduced transistors. The third generation (1963-1971) utilized integrated circuits, leading to smaller and more efficient computers. The fourth generation (1971-present) is characterized by microprocessors, allowing for personal computers and user-friendly interfaces. Finally, the fifth generation (2010-present) focuses on artificial intelligence, aiming to develop computers capable of learning and self-organization.

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