Waec May/June 2022 Computer Science Answers

Waec May/June 2022 Computer Science Answers
  • ======================
    ""COMPUTER STUDIES EXAM""
    =====================


    Computer-Obj!
    1-10: BABDDBDCDD
    11-20: ABBDABDDBC
    21-30: CCDCCDDBDC
    31-40: BCACBBDCCC
    41-50: AAAAABAADA




    (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)


    (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)


    (2aii)


    (2aiii)


    (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.

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

    NUMBER 3


    (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.

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

    (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.
    =========================

    5.
    CLS
    INPUT "Enter a word:"; w$
    FOR i = LEN(w$) TO 1 STEP -1
    m$ = MID$(w$, i, 1)
    rev$ = rev$ + m$
    NEXT i
    PRINT
    PRINT "The original word is "; w$
    PRINT "The reverse wod is "; rev$
    PRINT
    IF w$ = rev$ THEN
    PRINT "The given word is palindrome"
    ELSE
    PRINT "The given word is not palindrome"
    END IF
    END


    =============COMPLETED==========


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