What is OMR mainly used for?
Optical mark reader:Reading exam papers and surveys.
What is a disadvantage of OCR?
Inaccurate with poor print or handwriting.
Why is MICR used in banks?
Very accurate; magnetic ink is hard to forge.
Give one advantage of RFID over barcodes.
No line-of-sight needed; can read many tags at once.
What is a drawback of magnetic stripe cards?
Data can be easily skimmed or erased.
Why choose a laser printer?
Fast and cost-efficient for large volumes.
What is a weakness of inkjet printers?
Ink is expensive and runs out quickly.
Why are LED monitors preferred?
Low power use + better brightness/clarity.
Why use a projector in presentations?
Displays images to a large audience.
Name one ICT use of a microphone.
Voice recognition / voice commands.
Why are barcode readers used in shops?
Fast, accurate item identification → reduces human error.
What is one limitation of using a scanner?
Requires OCR for text → may produce errors.
Why are touchscreens widely used in smartphones and ATMs?
Simple to use; combines input + output.
Give one advantage of an optical mouse.
Precise and reliable because it has no moving parts.
Why is a keyboard important in ICT?
Fast, accurate text entry; essential for long data input.
