Important Computer Mcqs For Fpsc, Pcs, Nts, All Competitive Exams (1).pdf

Important Computer MCQs for FPSC, PCS, NTS, OTS & All Competitive Exams Question: What is a computer? Answer: A computer is an electronic device. It obeys our instructions. We can store data into it and can get stored data from it when we need. Question: What is ABACUS? Answer: ABACUS is the name of first calculating device, which was introduced by Chinese about 3000 B.C. This device is made of wooden box with rods inside. Question: Who is the Father of the Computer? Answer: Charles Babbage is the father of the computer. Question: Which was the first digital computer? Answer: The first digital computer was MARK-I. Question: Write the second name of the Main frame Computer? Answer: Macro computer is the second name of the mainframe computer. Question: Write any example of Digital computer. Answer: Digital watch, computer, and computer equipments are the examples of digital computer. Question: Write any example of Analog computer. Answer: Thermometer, Wight machine and speed meter are the examples of analog computer. Question: What is Hardware? Answer: Physical components of a computer are called Hardware. Question: Write any three hardware components of a computer. Answer: 1. Keyboard 2. Motherboard 3. Monitor Question: What is meant by input? Answer: Word input meAnswer to enter something into any thing. Question: Write names of any three input devices of the computer? Answer: 1. Keyboard 2. Joystick 3. Mouse Question: Write names of any three output device. Answer: 1. Monitor 2. Printer 3. Plotter Question: What is CPU? Answer: CPU stands for Central processing Unit and this portion of computer is called brain of the

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Important Computer MCQs for FPSC, PCS, NTS, OTS & All Competitive Exams computer. Question: What is ALU? Answer: ALU stands for Arithmetic and Logical Unit. This unit of the CPU is capable of performing arithmetic and logical operations. Question: What is Memory Unit? Answer: In the memory unit of the computer data can be stored to use again and again and it is physical unit of the computer. Question: Which is the volatile memory of the computer? Answer: RAM is the volatile memory of the computer. Question: Which is the non-volatile memory of the computer? Answer: ROM is the non-volatile memory of the computer because we cannot change its contents. Question: What are the peripheral devices of the computer? Answer: The devices, which are connected to a computer, are called peripheral devices like keyboard, monitor and mouse. Question: What is an algorithm? Answer: A computer cannot solve any problem itself. “An algorithm is a set of instructions that are used to solve a problem. Question: Write down the steps to solve a problem. Answer: There are six steps to solve a problem. 1. Define the problem 2. Algorithm 3. Flow charting 4. Coding 5. Testing and debugging 6. Documentation Question: What is meant by debugging? Answer: Debugging is the process of removing errors from a program. Question: What is a bug? Answer: In terms of computer an error of a program is called a bug. Question: What is documentation?

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Important Computer MCQs for FPSC, PCS, NTS, OTS & All Competitive Exams Answer: Documentation is the explanation of a program. It describes how a program works. Question: Write names of backing storage devices. Answer: Floppy disk, Hard disk, Magnetic Tape Disk, Compact Disk (CD). Question: Write the name of primary storage of the computer. Answer: RAM and ROM are called primary storage of the computer. Question: Write names of the secondary devices of the computer. Answer: Hard disk, floppy disk and compact disks are secondary storage devices of the computer. Question: What is the second name of secondary storage devices? Answer: Secondary storage devices are also called backing storage devices. Question: What is the measurement unit of the computer memory? Answer: Byte is the measurement unit of the computer memory. Question: How much data can be stored in a floppy disk? Answer: We can store maximum 1.44 MB data in a floppy disk. Question: In how many sizes a floppy disk is available? Answer: A floppy disk is available in two sizes that is 4.5 and 5.25 inches. Question: What is a byte? Answer: A byte is the measurement unit of the computer memory and it consists of 8 bits. Question: What is a bit? Answer: A bit is the smallest unit of the computer memory. Question: Which command is used to check errors from a disk? Answer: CHKDSK command is used to check errors of a disk. Question: How will you make a disk useable? Answer: To make a disk useable, it is formatted by using FORMAT command of DOS. Question: BASIC stands for. Answer: Beginners All purpose Symbolic Instruction Code. Question: What is data? Answer: Collection of facts and figures is called data.

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Important Computer MCQs for FPSC, PCS, NTS, OTS & All Competitive Exams Question: What is information? Answer: Processed form of data or organized form of data is called information. Question: Who invented BASIC language? Answer: Dr. John, G. Kemney and Dr. Thomas E. Kurtz. Question: What is the purpose of REM command in BASIC language? Answer: This command is used to make a statement non-executable and is helpful for documentation of a program. Question: What is maximum length of a variable in BASIC language? Answer: The maximum length of a variable in BASIC is 40 characters. Question: What is a variable? Answer: The quantity which does not remain fix. Question: What is a constant? Answer: The quantity, which remains fix and cannot be changed, is called constant. Question: How many types of a variable in BASIC language? Answer: There are two types of variables in BASIC language. Question: Write the names of variable types. Answer: 1. Numeric variable 2. String variable Question: How will you make a variable string? Answer: To make a variable string variable place $ sign after the name of the variable. Question: What is the maximum length of a string variable? Answer: 255 characters. Question: What is the base of hex-decimal numbers? Answer: 16 Question: What is the purpose of TRON in basic language? Answer: TRON displays line number during execution of the program. Question: What is a loop? Answer: Repetition of program statements is called a loop.

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Important Computer MCQs for FPSC, PCS, NTS, OTS & All Competitive Exams Question: Write names of some famous high-level languages. Answer: Some common high-level languages are: 1. FORTRAN 2. PASCAL, PEARL 3. BASIC , PH.P 4. JAVA 5. C++ Question: How many parts of computer? Answer: There four parts of computer: 1. Monitor / LCD / LED 2. Keyboard 3. C.P.U 4. Mouse

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