Computer & IT

note!Answer: B) Millisecond
A millisecond is one thousandth (10^-3) of a second.

note!Answer: A) John Napier
John Napier was a Scottish mathematician who introduced logarithms in the early 17th century. Logarithms simplify complex calculations, especially multiplication and division.

note!Answer: D) All of the above
All three statements describe aspects of a computer:
- A. A computer can perform calculations automatically according to instructions.
- B. A computer processes numerical data and performs mathematical operations.
- C. A computer is a machine developed by humans.
Therefore, the expected MCQ answer is D. All of the above.

note!Answer: C) Collecting and converting the data into useful information
Data processing means collecting and converting raw data into useful information.

note!Answer: B) Enter information
A keyboard is an input device used to enter information into the computer.

note!Answer: D) CPU
The CPU consists of the control unit and the arithmetic logic unit (ALU).

note!Answer: B) Microprocessor
In a microcomputer, the CPU is built on a single chip and is called a microprocessor.

note!Answer: A) Set of instructions
A computer program is a set of instructions that receives input and processes it to produce output.

note!Answer: C) Charles Babbage
Charles Babbage designed the Difference Engine in the 1820s.

note!Answer: D) John von Neumann
John von Neumann is associated with the stored-program computer concept, in which both data and program instructions are stored in the computer's memory. This is known as the Von Neumann architecture.

note!Answer: D) No one of the above
The punched-card data-processing system was developed and popularized by Herman Hollerith in the late 19th century. He used punched cards to process data for the 1890 U.S. Census. Since his name is not listed, option D is correct.

note!Answer: B) Punch card
A punch card is a traditional input device that also serves as a storage medium. Data and instructions are represented by holes punched into the card. The card can be read by a punch-card reader to enter data into a computer.

note!Answer: D) No one of the above
All the physical, touchable parts of a computer are called hardware. Examples include the keyboard, mouse, monitor, CPU, and printer. Since “Hardware” is not listed among the options, the correct answer is D.

note!Answer: C) Firmware
Firmware is software permanently stored in hardware, usually supplied by the hardware manufacturer.

note!Answer: B) One byte
A character is typically stored in one byte, which is 8 bits.

note!Answer: A) 10^9 Bytes
In the decimal system commonly used in traditional computer-fundamentals MCQs, 1 GB = \(10^9\) bytes = 1,000,000,000 bytes.
Note: In the binary system, 1 GiB = \(2^{30}\) bytes = 1,073,741,824 bytes.

note!Answer: C) Mainframe computer
Mainframe computers are designed to support many users working at the same time.

note!Answer: D) All of the above
In older computer-fundamentals textbooks, microcomputers are commonly associated with PC, PC-XT, and PC-AT categories. Therefore, when all three are listed as options, All of the above is the likely expected exam answer.

note!Answer: D) Fifth generation
Artificial intelligence is associated with the fifth generation of computers, which aimed at knowledge-based reasoning.

note!Answer: C) A communication path way over which information and signal are transferred
A bus is a communication pathway through which data, information, and signals travel between computer components.