Chapter-1 Introduction to Computer
Q1. Fill in the blanks.
a. GIGO
b. output
c. a millionth of a second
d. vehicles
e. goods or services
Q2. Give the full forms of the following:
a. GIGO = Garbage In Garbage Out
b. CAD = Computer Aided Design
c. CAM = Computer Aided Manufacturing
d. E-commerce = Electronic Commerce
e. E-mail = Electronic Mail
f. CBT = Computer Based Training or Test
g. CAE = Computer Aided Engineering
Q3. Write the technical terms for the following statements:
a. Versatility
b. Output
c. Pico second(ps)
d. Diligence
e. One Byte
f. One Giga Byte(GB)
Q4. Match the following
Pico second - Trillionth of second
Milli second - Thousandth of second
Micro second - Millionth of a second
Femto second - Quadrillionth of a second
Nano second - Billionth of a second
Q5. Answer the following questions in short:
a.What is bit?
Ans: Either 0 or 1 is called Bit (Binary Digit).
b.What is nano second?
Ans: A Billionth of a second is called nano second.
c.What is byte?
Ans: Collection of 8 bits is called a byte.
d.What is kilobyte?
Ans: Collection 1024 bytes is called kilobyte.
e.What is CBT?
Ans: The training which is conducted with the help of computer is called CBT(Computer Based Training).
f.What is fifth industrial revolution?
Ans: The combination of machine with artificial intelligence or human intelligence is called fifth industrial revolution.
Q6. Answer the following questions.
a.Define computer. Explain speed and accuracy characteristics of a computer.
Ans:
Computer: A computer is an electronic device that processes and stores data according to instructions given to it. It can perform various tasks, from simple calculations to complex operations, and is capable of executing programs and running software.
Speed: Computers are known for their high-speed processing capabilities. They can execute instructions and perform calculations in fractions of a second, enabling quick completion of tasks. The speed of a computer is determined by factors such as processor speed, memory bandwidth, and storage access time.
Accuracy: Computers exhibit a high degree of accuracy in executing tasks. They follow instructions precisely and consistently, minimizing errors in calculations and operations. The accuracy of a computer is ensured by its digital nature, where data is represented in discrete binary digits (bits) and processed with logical precision.
b.What do you mean by storage capacity of a computer? Write the different storage units of computer.
Ans:
Storage Capacity: The storage capacity of a computer refers to the amount of data it can store for later retrieval and use. It encompasses both primary storage (e.g., RAM) used for temporary data storage during program execution and secondary storage (e.g., hard disk drives, solid-state drives) used for long-term data retention.
Different Storage Units: Computers use various units to measure storage capacity, including:
Bit: The smallest unit of data, representing a single binary digit (0 or 1).
Byte: A unit of digital information consisting of 8 bits.
Kilobyte (KB): Approximately 1,024 bytes.
Megabyte (MB): Approximately 1,024 kilobytes or 1,048,576 bytes.
Gigabyte (GB): Approximately 1,024 megabytes or 1,073,741,824 bytes.
Terabyte (TB): Approximately 1,024 gigabytes or 1,099,511,627,776 bytes.
Petabyte (PB): Approximately 1,024 terabytes.
Exabyte (EB): Approximately 1,024 petabytes.
Zettabyte (ZB): Approximately 1,024 exabytes.
Yottabyte (YB): Approximately 1,024 zettabytes.
c.Explain diligence of a computer in brief.
Ans: In computing, diligence refers to the reliability and consistency with which a computer executes tasks. A computer demonstrates diligence by reliably following instructions, completing tasks accurately and efficiently, and maintaining operational stability over time. Diligence is ensured through rigorous testing, quality assurance measures, and adherence to standards in hardware and software design.
d.Why is computer called versatile machine?
Ans: A computer is called a versatile machine because it can perform a wide range of tasks across various domains. Its versatility stems from its programmable nature, which allows it to execute different programs and adapt to diverse requirements. Computers can handle tasks ranging from simple calculations to complex simulations, multimedia processing, data analysis, communication, and more. Additionally, computers can be customized and upgraded with different hardware components and software applications to suit specific needs, further enhancing their versatility.
f.Explain the uses of computer in the field of education and banking.
Ans:
Education: Computers are extensively used in education for various purposes such as interactive learning, research, multimedia presentations, online courses, and educational software. They facilitate access to vast amounts of information, enable collaborative learning environments, and enhance teaching effectiveness through simulations and visualizations.
Banking: In banking, computers play a crucial role in operations such as online banking, transaction processing, account management, fraud detection, and risk analysis. They enable secure and efficient handling of financial transactions, provide real-time access to account information, support automated processes like ATM operations and electronic fund transfers, and enhance customer service through digital channels.
g.Explain any two application areas of computer.
Ans:
Healthcare: Computers are widely used in healthcare for tasks such as patient record management, diagnostic imaging, medical research, treatment planning, and telemedicine. They facilitate the storage and retrieval of patient data, aid in medical imaging analysis, assist in clinical decision-making through data analysis and predictive modeling, and enable remote consultations and monitoring of patients.
Entertainment: Computers are integral to the entertainment industry, powering activities such as gaming, multimedia content creation, streaming services, virtual reality experiences, and digital art. They enable immersive gaming experiences, support the production and distribution of movies, music, and other media, provide platforms for social networking and content sharing, and drive innovation in digital entertainment technologies.
h.Explain the term "GIGO"in your own words.
Ans: GIGO stands for "Garbage In, Garbage Out." It refers to the concept that the quality of output produced by a computer system is directly dependent on the quality of the input data provided to it. If the input data is inaccurate, incomplete, or irrelevant (referred to as "garbage"), the output produced by the computer will also be flawed or meaningless. In other words, a computer will faithfully process and manipulate whatever data it is given, without any inherent ability to distinguish between valid and invalid information. Therefore, it is essential to ensure the integrity and accuracy of input data to obtain meaningful and reliable results from a computer system.
End of Ch-1