1. SPN 21 ComputerStudies- Inputdevices
Exercise 3
Answerall the questions.
a) State the differencesbetweenManual andAutomaticinputdevices. [5]
b) Discussthe advantagesof usingkeyboardovertypewriter. [5]
c) Give the functionsforeachof the followinginputdevices.
i.Scanner.[2]
ii.Microphone.[2]
iii.Sensors.[2]
iv.MICR. [2]
v. Graphicstablet.[2]
d) Barcode readeris a hand-heldorstationaryinputdeviceusedtocapture andread
informationcontainedina bar code.
i.Explainhowitworks. [5]
ii.Identifythe fivebasickindsof barcode reader. [5]
[Total: 30 Marks]
![SPN 21 ComputerStudies- Inputdevices
Exercise 3
Answerall the questions.
a) State the differencesbetweenManual andAutomaticinputdevices. [5]
b) Discussthe advantagesof usingkeyboardovertypewriter. [5]
c) Give the functionsforeachof the followinginputdevices.
i.Scanner.[2]
ii.Microphone.[2]
iii.Sensors.[2]
iv.MICR. [2]
v. Graphicstablet.[2]
d) Barcode readeris a hand-heldorstationaryinputdeviceusedtocapture andread
informationcontainedina bar code.
i.Explainhowitworks. [5]
ii.Identifythe fivebasickindsof barcode reader. [5]
[Total: 30 Marks]](https://image.slidesharecdn.com/exercise3-101107023518-phpapp01/85/Exercise-3-1-320.jpg)
