Computer System Class 8 MCQ: CBSE Board Class 8 Computer MCQ Questions and Answers with elaborate explanation. Students get here all Important MCQ on Computer System Class 8.
Computer System Class 8 MCQ with Answers and Explanations:
1.) The abbreviation of IPO
a) Information Processing Cycle b) Internal Processing Object
c) Information Processing Cabin d) Information Processing Order
Explanation :-As we are aware that the computer is an electronic machine. It does not work by its own, it requires some instructions given by the user. Computer intakes the data (Instruction that is feeded by the user), works on the provided data as per the specific rules, and after processing displays the result in the form of output. If the user wishes to, then the computer can store the data for future reference. The continuous cycling process of input, process, output and storing is to be termed as IPO (Information Processing Cycle)
2.) The collection of unorganized facts
a) Instruction b) Data c) Information d) All of these
Explanation :-Data is the raw fact that is unprocessed and un organized. It includes words, numbers, images or sounds. On the basis of the raw data collected, Information can be generation by manipulating and processing the data.
3.) The main task of a computer is to work on the inputted data and convert them into the information as output.
a) Output b) Storing c) Input d) Process
Explanation :-The main task of the computer is to process the data (the instruction that is feeded into the computer by the user) into the meaningful information (the result). Computer performs all the tasks of processing the data with the help of the instructions (the steps which guides the computer about how to accomplish a particular task).
4.) The person who makes use of the computer
a) Computer user b) Computer operator
c) Computer Utilizer d) None of these
Explanation :- The person who makes use of computer for communication or for generating information is known as Computer user. The computer user must have the knowledge about computer handling and how to use it.
5.) The physical components of the computer are known as
a) Software b) Program c) Hardware d) Both A and C
Explanation :-Hardwares are the important parts of the computer that are connected to the computer. With the help of hardwares we can make softwares to run on the computer properly. The hardwares are the things/objects that we can see, touch. Hardwares can be divided into input and output devices. Mouse, Keyboard, Monitor, CPU, etc are some examples of the harwares.
6) The person is regarded as the father of modern computers.
a) Charles Babbage b) Mark Zuckerberg c) Tim Berner Lee d) Bill Gates
Explanation :- In the year 1873, Charles Babbage invented the machine named as Analytical Engine. This machine included the functions like input, output, storage, processor, control unit etc. Nowadays, you may see all these five parts in modern computers. Hence Charles Babbage is regarded as the father of modern computers.
7.) The data or instructions that is entered into the computer is known as
a) Store b) Input c) Output d) Feed
Explanation :-The data or instructions that is entered into the computer by the computer user is to be termed as input. The user enters the data or instructions into the computer by making use of the input devices such as keyboard, mouse, scanner etc.
8.) The collection of related instructions that is organized for a specific task
a) Hardware b) Software c) Human ware d) None of these
Explanation :-As you know that computer is an electronic machine which cannot work on its own. It requires some one/guidelines for the computer and its hardware to work. So software performs the work. In other words it can be termed as it is a set of programs/instructions which guides the computer to or its hardware s work. This programs are stored on the computer. We cannot see/touch the software. Basically there are two types of softwares which are System software and Application software.
9.) It means treating the data according to the instructions and changing it in the form of information.
a.) Processing b) Converting c) Changing d) None of these
Explanation :- Processing means treating of data into the information according to the instructions. The abbreviation of CPU is Central Processing Unit. or the processor that is always fixed on the motherboard inside the CPU cabinet box is the device that processes the data in the computer. CPU also performs the operations of calculations, processes of data into the information. CPU gets the data feeded by the input devices and shows the information/ output by making use of the output devices. CPU controls the entire working/ operation of the computer system and hence is regarded as the brain of the computer.
10.) The data that is been processed into the meaningful form
a) Input b) process c) Output d) Storing
Explanation :-The term Output means releasing of the data or information from the computer to the outside world. In other terms it can be said as, displaying or showing the results to the user for the work done by the computer. The devices which are used to display the results to the user are known as Output Devices. For ex:- Monitor, Speakers, Printer, etc. Here also the work performed by the devices are different like Monitor shows the results of the work done to the user on its screen, Speakers are used to output the data into an audible form, whereas Printers are used to show the result on the paper by printing it.
11.) The process of saving the data into the storage devices after processing is to be termed
a.) Input b) process c) Output d) Storing
Explanation :- One the processing on the feeded data/instruction is over, then that data is needed to be saved for the future use. This data is stored on the storage devices like CD-ROM, DVD-ROM,, pen drive etc. the data that is stored on the storage devices computer makes use of it whenever it is required. This process of saving the data into the storage devices is to be termed as Storing.
12.) The person who designs, programs or operates the computers is known as
a.) Hardware b) Freeware c) Software d) Human ware
Explanation :-It is a person who programs, designs, and operates a computer. The person who makes use of a computer is known as computer user. If the person/computer user works continuously for much hours, he/she can face many health related problems.
13.) Its main purpose is to incorporate comfort, efficiency and safety into the design of keyboards, computer desks, chairs and other things at the workplace.
a) Economics b) Ergonomics c) Geometry d) None of these
Explanation :-It is the study of people, their physical characteristics and the ways in which they function in relation to their working environment, the furnishings and machines they use. The main aim of the ergonomics is to incorporate comfort, efficiency and safety into the design of keyboards, computer desks, chairs and other things at the workplace.
14.) RSI stands for
a.) Rapidly System Integration b) Reading Symbols and Information
c) Rapidity Stress Injury d) None of these
Explanation :- RSI stands for Rapidity Stress Injury which is also called as Carpal Tunnel System. It is a injury which can identified on the basis of some symptoms which includes numbness, tingling and pain in the fingers. This injury occurs when the person does not type on the keyboard without proper wrist support or the persons who type on continuously for long period of time without taking any breaks/pause.
15.) The computers that are placed on the lap of the person while making use of it.
a.) Desktop b) Laptop c) Palmtop d) Mainframe
Explanation :-In todays world Notebook computers are also known as laptop computers. Notebook computers are very small in size, operate on batteries and are easier to carry from one place to another. A notebook computers have the same components of desktop computers including display, keyboard, a touch pad which acts a mouse, speakers etc. Nowadays the latest laptop (Ultrabook- is lightweighted, small/thinner in size, high powered, low voltage processors, and has long battery life etc.) The laptop computers are always kept on the lap of the person while making use/working on it.