Computer Past Questions And Answers
(a) Define logic gate.
(b) Give one example each of: (i) standard logic gate; (ii) alternative logic gate.
(c) Using P and Q as inputs and R as output:
(i) draw the logic symbol for an XOR logic gate: (ii) construct the truth table for XOR logic gate.
(d) List two uses of a logic gate.
View Discussion (0)WAEC 2018 THEORYWhich of the following was used by Joseph Marie Jacquad in inventing the Loom?
- A. Punched card
- B. Smart card
- C. Smart chip
- D. Sound card.
At least how many keys is a keyboard made up of?
- A. 105
- B. 107
- C. 101
- D. 103
Which of the following is the standard keyboard layout ?
- A. Dvorak
- B. QWERTY
- C. AZERTY
- D. ABCD
Anti-virus software is an example of ?
- A. Utility programs
- B. Operating systems
- C. Application software
- D. Translators
A computer that requests the services of another computer on a network is called a?
- A. client
- B. host
- C. master
- D. server
To hold row and column titles in places so that they do not scroll when the user scrolls a worksheet, click the?
- A. freeze panes command on the windows menu.
- B. hold titles command on the edit menu.
- C. split command on the windows menu.
- D. show grid command on the windows menu.
The windows shortcut key for closing an active application is
- A. Alt+F4
- B. Ctrl+Alt+Del
- C. Ctrl+Esc.
- D. Ctrl+Shift+Del
The number of input combination for a 4 input gate is ______
- A. 9
- B. 8
- C. 15
- D. 16
Which process is used by large retailers to study trends?
- A. Data mining
- B. Data selection
- C. Data conversion
- D. Pos