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Introduction to computers

 Chapter:-1 Introduction to computers

SUMMARY 

Computers are machines that take data and instructions, store them into its memory and execute them on demand.  In this chapter we saw working of typical computers. 

We learnt about different input, output and processing units with examples. Because of the characteristics like speed, accuracy, and storage capacity, computers are used for many applications. 

In this chapter we saw highlights of the important characteristics of computers along with some applications. Finally we discussed the concepts of hardware, software and firmware.

Choose the most appropriate option from those given below:

(1) Which of the following is the typical work flow of a computer ?

(a) Input, output and process         (b) Input, process and output:

(c) Output, process and input         (d) Any of these


(2) Which of the following identifies the concept of a computer itself remembering the set of data and instructions to be executed?

(a) Stored program concept     (b) Fixed source concept

(c) Automatic source concept      (d) Variable source concept


(3) Which of the following refers to a set of step by step instructions to perform a given task written in machine understandable format?

(a) Program         (b) Algorithm

(c) Instruction                  (d) Data


(4) Which of the following devices converts the given data into machine readable form while entering data into the computer ?

(a) Output (b) Input

(c) Memory (d) All of these


(5) Which of the following does a computer memory retains ?

(a) Data (b) Instructions

(c) Results (d) All of these


(6) Which of the following memory types is costly, fast and limited in size?

(a) Primary (b) Secondary

(c) Temporary (d) All of these


(7) What is the other name of primary memory?

(a) Non-volatile (b) Volatile

(c) Fragile (d) Non-Fragile 


(8) Which of the following are characteristics of secondary memory?

(a) Cheaper and slower than the primary memory.

(b) Cheaper and faster than the primary memory.

(c) Volatile and slower than the primary memory.

(d) Volatile and slower than the primary memory.


(9) Hard disk and compact disks (CDs) are examples of which of the following device types ?

(a) Primary (b) Secondary

(c) Temporary (d) None of these


(10) Which of the following unit performs the arithmetic and logical computations?

(a) Arithmetic logic unit (b) Advanced mathematical logic unit

(c) Alternative logic unit (d) Logic unit


(11) Which of the following unit manages execution of instructions and controls operations of other components of the computer ?

(a) Memory (b) Input

(c) Control (d) Output


(12) Which of the following does ALU and control units together form ? 

(a) Central processing unit (b) Control processing unit

(c) Memory         (d) Input/Output unit

(13) Which is an example of an output mechanism ?

(a) Keyboard (b) Barcode reader at superstore

(c) Printer (d) Mouse


(14) Which component of a computer is known as the brain of a computer ?

(a) Input unit (b) Output unit

(c) Central processing unit (d) Memory unit


(15) Which of the following is full form of GIGO?

(a) Garbage in garbage out (b) Global input in global output

(c) Garbage out garbage in (d) Get Input Get Output


(16) Which of the following is a component of Software ?

(a) Instructions         (b) Data

(c) Documentations (d) All of these


(17) Which of the following does the term hardware refers to ?

(a) Soft parts of computers. (b) Logical parts of computers.

(c) Physical parts of computers. (d) Any of these




Link to download Chapter :- 1 


 







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