WAEC 2022 Computer Studies Essay And obj Answer-May/June Expo

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COMPUTER STUDIES:
1-10: BABDDBDCDD
11-20: ABBDABDDBC
21-30: CCDCCDDBDC
31-40: BCACBBDCCC
41-50: AAADBBAADA

=
COMPUTER SOLUTIONS

(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

=============================

(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.

=============================

(4ai)
Slide Master is the top slide that controls all information about the theme, layout, background, color, fonts, and positioning of all slides. 

(4aii)
(i)On the View tab, click Slide Master.
(ii)In the left pane that contains the slide master and layout thumbnails, right-click the layout thumbnail that you want to rename, and then click Rename Layout.
(iii)In the Rename Layout box, type the new name of the layout, and then click Rename.
(iv)On the Slide Master tab, in the Close group, click Close Master View.


(4bi)
Handout master: Handout master in ms PowerPoint is used change or edit  the appearance and layout  of a presentation's printed handout.

(4bii)Notes master: notes master in ms PowerPoint is a feature that allows you to control the settings of the notes section of PowerPoint.
================================

(3a)
TABULATE

1 - USe of an anti-virus - ✓
2 - Use of backup - ✓
3 - Use of biometrics - ✓
4 - Use of folder - ✓
5 - Use of manual file - ✓
6 - Use of password - ✓

(3b)
(i)Irregular power supply can limit access to computer files.
(ii)Computer files are more expensive to set up compared to manual files.

(3ci)
Charts in MS Excel helps to present information contained in the worksheet in a graphic format i.e Column, Line, Pie, Bar, and scatter charts.

(3cii)
(i)Bar chart
(ii)Pie chart

More coming...



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