CBSE Class 9 Computer Science Introduction to Computers MCQs

(1)  Systematically designed step by step guidelines generally written in simple english language are called __  .

(A) Algorithm (B) Compiler (C) Interpreter (D) Computer 

(2) The set of data and instructions provided by a user to the computer is called an  

(A) Output (B) Process  (C) Input (D) None 

(3)  Computer processes the input and presents results to the user. The result is called

(A) Output (B) Process  (C) Input (D) None 

(4)  The set of instructions in machine readable format is called

(A) Output  (B) Process  (C) Program  (D) None

 (5)  Once the program is written, it can be used many times with different set of data, this concept is known as  

(A) Stored program concept (B) compiling

(C) Interpreted (D) None 

(6)  The input mechanism helps in feeding data as well as instructions into the computers, this mechanism is called

(A) output unit (B) input unit (C) process unit  (D) none 

(7)  Devices used for the input purpose are known as

(A) input device  (B) output device (C) cpu (D) none 

(8)  Input provided through the input mechanism is stored in memory and further processed by a mechanism called

(A) Input Unit  (B) Output Unit (C) Processing Unit (D) None 

(9) Results are presented to the user through output mechanism called _  _

(A) Input Unit  (B) Output Unit  (C)CPU (D) None 

(10) From the following is the input device.

(A) USB  (B) barcode reader (C) joystick  (D) All 

(11) _ _ is a device that controls movement of the computer on the display screen.

(A) Keyboard  (B) Mouse (C) Monitor (D) None 

(12)  Computer memory retains data, instructions and processed output for a while, is called _ memory. 

(A) volatile (B) non-volatile (C) both (A) & (B) (D) None 

(13) The arithmetic and logical computations are performed by a unit called .

(A) CU (B) ALU  (C) PC (D) None 

(14)  In CPU, there is a, which manages execution of instructions and control operations of other components of the computer.

(A) CU  (B) ALU (C) PC (D) None 

(15) ALU and control units together form  

(A) CPU (B) CU  (C) PC (D) None 

(16) The output unit is normally a visual screen called .

(A) printer (B) monitor (C) mouse  (D) none 

(17) From the following  is the advantages of a computer.

(A) Programmability (B) Long Term Storage

(C) All  (D)perform mechanical & repetitive task 

(18)  _ is a comprehensive term for all physical parts of a computer. 

(A) software (B) hardware  (C) firmware  (D) None 

(19)  Software instructions integrated along with hardware, software is closely coupled with hardware, it is known as  

(A) software (B) hardware (C) firmware (D) None 

(20)  CPU stands for

(A) Centric Process Unit  (B) Central Processing Unit

(C) Central Parallel Unit  (D) Central Process Unit 

(21) CU stands for _ 

(A)Control Unit (B) Central Unit (C) Centric Unit (D) Central Universal 

(22) ALU stands for_

(A)Arithmetic Logical Unit (B) Arithmetic Logic Unit  (C) Arial Logic Unit (D) Arial Logical Universal 

(23)  PC stands for

(A)Private Computer  (B) Personal Controller

(C)Personal Computer (D) Private Connector 

(24) GIGO stands for  

(A) Garbage Inside Garbage Outside (B) Google In Google Out

(C) Graphics In Graphics Out (D) Garbage In Garbage Out 

(25) USB stands for  

(A) Unit Stand Bus (B) Universal Software Bus

(C) Universal Serial Bus (D) Unit Serial Bus 

(26)  RAM stands for

(A)Random Access Memory (B) Radial Arithmetic Memory

(C) Random Arithmetic Memory  (D) Random Access Mechanism 

(27) ROM stands for  

(A) Random Output Memory (B) Real Output Machine

(C) Read Only Memory  (D) Read Output Memory