Tuesday, 30 August 2016

Homework for 4 B on 30/08/16.

English

Complete exercise A on page no.12 of your workbook and submit on 31/08/16 (Wednesday).

Maths

Solve question no 1(a-f)  2 (a-f) and 3(a-c)  of page 6 in your Maths Workbook and submit the same on 31 / 8/2016 (Wednesday).

Computer

Answer the following in your computer notebook. Submit the same on 5/9/2016(Monday).



Q. Read the following statements carefully and rectify them by changing the underlined words.
a) RAM is permanent memory.
______________________________________________________________________________________________________

b) RAM stands for Read Only Memory .
______________________________________________________________________________________________________

c) RAM stores all the instructions that the computer needs to start working.
______________________________________________________________________________________________________

d) DVD is permanent memory fitted inside your CPU.
______________________________________________________________________________________________________

e) CD is a small storage device that can be used to copy data using USB port of your computer.
______________________________________________________________________________________________________

Q. Identify the Input, Input Device, Output, Output Device and Process in the following statements.
1. Reena wants to add two numbers and wants to display the output.
Ans. Input – two numbers
         Input Device – Keyboard
         Process – Addition
         Output – Sum of the numbers
         Output Device – Monitor

2. Suraj wants to find the greater of two numbers and wants to print the output.
Ans. Input – two numbers
         Input Device – Keyboard
         Process – Comparison
         Output – Greater of the two numbers
                         Output Device – Printer

3. Amit wants to listen to the songs from the CD.
Ans. Input – Songs on the CD
         Input Device – CD Drive
         Process – playing song
         Output – song can be heard
         Output Device – Speakers

Q. Select the correct answer out of four choices.
1. Logical comparisons are made by the ______________
          (a) ALU          (b) MU          (c) CU           (d) ALU and CU

2. Information on a computer is stored in the _____________
          (a) CU            (b) ALU         (c) INPUT     (d) MU

3. The brain of the computer is the ____________
          (a) ALU          (b) CU           (c) MU          (d) CPU

4. The Control Unit _______________________
          (a) Makes comparisons                                    (b) Calculates
          (c) Directs different parts of the computer   (d) Stores data