Waec 2022 Computer Studies question and answer

Waec 2022 Computer Studies Questions and Answers


OBJECTIVES:

COMPUTER OBJ:
1-10: BABDDBDCDD
11-20: ABBDABDDBC
21-30: CCDCCDDBDC
31-40: BCACBBDCCC
41-50: AAA–BAADA

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Computer Studies Essay
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(1a)
An output device is any piece of computer hardware equipment which converts information into a human-perceptible form or, historically, into a physical machine-readable form for use with other non-computerized equipment.

(1b)
(i) Dot Matrix Printers.
(ii) Thermal Printers.

(1ci)
[img]https://i.imgur.com/y59m2a9.png[/img]

(1cii)
“true” if either or both of the inputs are “true.” If both inputs are “false,” then the output is “false.” In other words, for the output to be 1, at least input one OR two must be 1.

(1d)
(i)OR Gate
(ii) AND Gate

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Number 2

(2ai)
[img]https://i.imgur.com/1M79rBz.png[/img]

(2aii)
[img]https://i.imgur.com/c95FOZD.jpg[/img]

(2aiii)
[img]https://i.imgur.com/hYssdcn.png[/img]

(2bi)
(i)Less expensive because each device only need one I/O port and wishes to be connected with hub with one link.

(2bii)
(ii) it makes linear connections much easier to complete.

(2ci)
(i)Bus topology is not great for large networks

(2cii)
(ii)If any individual connection in the ring is broken, the entire network is affected.

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Number 3

[img]https://i.imgur.com/oJx9vOf.jpeg[/img]
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(4ai)
A slide master is the top slide in a hierarchy of slides that stores information about the theme and slide layouts of a presentation, including the background, color, fonts, effects, placeholder sizes, and positioning.

(4aii)
On the View menu, select Master > Slide Master. In the slide thumbnails on the left, select the layout you want to rename. On the Slide Master tab, click Rename. In the Rename Layout dialog box, type a new name, and then click Rename.

(4bi)
The HANDOUT MASTER tab in Microsoft PowerPoint is used to edit the appearance and layout of presentation handouts. Changes made to the handout master appear on all the pages of the printed handout.

(4bii)
The notes master in PowerPoint is a feature that allows you to control the settings of the notes section of PowerPoint. It allows you to change layouts, font size, font type, font style, and much more. To enable the Notes Master in PowerPoint, click on the “View” ribbon and then on “Notes Master.

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(NUMBER 5)

SUB palindrome (w$)
FOR i = LEN(w$) TO 1 STEP -1
rev$ = rev$ + MID$(w$, i, 1)
NEXT i
IF rev$ = w$ THEN
PRINT “The given word is palindrome”
ELSE
PRINT “The given word is not palindrome”
END IF
END SUB

*COMPLETED*
(3a) THICK APPROPRIATELY.

(3b)
(i) Irregular Power Supply can limit to computer files.
(ii) Computer Files are more Expensive to set up compared to manual files.

(3ci) A chart can be defined as the pictorial or diagrammatical representation of data in a worksheet. It is used to represent the relationship between one or more data in a worksheet.

(3cii)
(i) Bar Chart.
(ii) Pie Chart.

 

 

 

 

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