Computer History Practice Questions! Quiz
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A computer is an electronic machine that
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Lists instructions.
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Accepts data and processes it.
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Has sliding beads.
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Punches holes in cards.
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Computers just like everything else have come far from their original to what they are now. The first computer was immobile, it took a lot to operate it, and the processing speed was not as it is now. We have covered all the generations of computer in our previous classes. Take this test up and see how much you know about computer history.
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Why do computers use binary numbers?
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Computers can only understand ones and zeros.
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Ten numbers are too many.
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There are too many letters in the alphabet.
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It takes too long to spell words out.
Correct Answer
A. Computers can only understand ones and zeros.Explanation
Computers use binary numbers because they can only understand ones and zeros. Binary is a base-2 number system that uses only two digits, 0 and 1, to represent all information. This is because computer processors are built using electronic circuits that can only distinguish between two voltage levels, on and off. By using binary, computers can efficiently process and store data in a way that is compatible with their hardware design.Rate this question:
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- 3.
What is a central processing unit?
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Devices such as a mouse or keyboard.
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Where you put a CDROM.
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8 bits.
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Device that directs all the activities of a computer.
Correct Answer
A. Device that directs all the activities of a computer.Explanation
The central processing unit (CPU) is the device that directs all the activities of a computer. It is often referred to as the "brain" of the computer because it performs all the necessary calculations and executes instructions. The CPU is responsible for fetching, decoding, and executing instructions, as well as managing and coordinating the various components and devices of the computer system. It controls the flow of data between the different parts of the computer and ensures that all tasks are carried out efficiently and in the correct order.Rate this question:
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- 4.
What is computer software?
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The soft insides of a computer.
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Programs that tell the computer what to do.
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The brains of a computer.
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Programs you can only use on the Internet.
Correct Answer
A. Programs that tell the computer what to do.Explanation
Computer software refers to the programs that are designed to instruct and guide the computer in performing specific tasks. It encompasses a wide range of applications, utilities, and operating systems that enable the computer to function effectively. The correct answer, "Programs that tell the computer what to do," accurately describes the role of software in providing instructions and commands to the computer, allowing it to execute various operations and tasks.Rate this question:
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- 5.
What is the primary difference between a computer and a calculator.
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A computer can make decisions.
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A calculator uses binary code.
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You can't turn a calculator off.
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A calculator can make decisions.
Correct Answer
A. A computer can make decisions.Explanation
A computer can make decisions because it is programmed with complex algorithms and has the ability to process and analyze data, allowing it to execute different actions based on specific conditions. On the other hand, a calculator is designed to perform simple mathematical calculations and does not have the capability to make decisions or perform complex tasks beyond its basic functions.Rate this question:
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- 6.
What is a network?
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Programs that tell the computer what to do.
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The wiring between the keyboard and the computer.
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When you have the Internet on your computer.
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Connects computers so they can transmit data.
Correct Answer
A. Connects computers so they can transmit data.Explanation
A network is a system that connects computers together so that they can communicate and share information with each other. This allows for the transmission of data between the connected computers, enabling them to work together and exchange information efficiently.Rate this question:
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- 7.
Which of the following are examples of hardware components (check all that apply):
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Mouse
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Keyboard
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Program
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Monitor
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Dock
Correct Answer(s)
A. Mouse
A. Keyboard
A. MonitorExplanation
The correct answer includes the components that are physical devices used to interact with a computer system. A mouse is a hardware component used for pointing and clicking, a keyboard is a hardware component used for inputting text and commands, and a monitor is a hardware component used for displaying visual output. These components can be physically touched and are essential for the functioning of a computer system.Rate this question:
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- 8.
What number system do we use today?
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Roman
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English
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Arabic
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French
Correct Answer
A. ArabicExplanation
The number system that is widely used today is the Arabic numeral system. This system originated in India and was later adopted by the Arab mathematicians, who introduced it to the Western world. The Arabic numeral system uses ten digits (0-9) and a place value system, allowing for efficient representation of numbers. It is the system used in most countries around the world for mathematical operations and everyday counting.Rate this question:
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- 9.
What is random access memory?
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Memory the computer can read but not write.
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Where all the decision are made in the computer.
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Memory the computer can read and write.
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It is a chip the computer uses to remember what to do.
Correct Answer
A. Memory the computer can read and write.Explanation
Random access memory (RAM) is a type of computer memory that allows data to be both read and written. It is a volatile memory, meaning that its contents are lost when the computer is turned off. RAM is used by the computer to store data that is actively being used by the CPU, allowing for quick and efficient access to information. Unlike read-only memory (ROM), which can only be read, RAM provides the computer with the ability to both retrieve and modify data, making it an essential component for the functioning of a computer system.Rate this question:
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Current Version
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Jan 21, 2025Quiz Edited by
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Sep 20, 2010Quiz Created by
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