CLASS - 4 || SUBJECT - COMPUTER || LESSON - 5 || MORE ABOUT MSW Logo ||

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LESSON 5

MORE ABOUT MSWLONGO

 

1.  Distinguish between pen up and pen down primitives.

PENUP primitive is used to lift up the turtle’s pen and move the turtle without drawing a line. PENDOWN primitive is used to put the pen down to start again drawing a line while it moves. The short form of PENUP primitive is PU and PENDOWN primitive is PD.

 

2.  What is a LOGO procedure?

A LOGO procedure is a set of commands given in a particular order. A procedure is a method of doing a particular task.

 

3.  How would you edit a LOGO procedure?

Procedure for editing a procedure is as follows:

a.   Click on Edall to edit a procedure

b.  The Editor window opens up. Now make changes in the editor window

c.   Click on the close button. A dialog box will appear asking you whether you want to save changes

d.  Click on yes.

 

4.  How are procedures useful?

The main advantage of writing a procedure is that once we define a procedure, we can use it any number of times simply by typing its name.

 

5.  What is the use of PRINT Command?

PRINT primitive is used to display a number, a word or a sentence. The result of PRINT primitive is displayed in the Recall list Box.

 

6.  Write a procedure to draw a square in LOGO.

To make a square without using REPEAT command FD 100 RT 90, we command –

FD 100 RT 90

FD 100 RT 90

FD 100 RT 90

FD 100 RT 90

 

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