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Computing

Computing · Quick practice · answer shown after each question

Barcodes and input technologies

Question 1 of 10

Question 1 of 10

A QR code differs from a traditional barcode because it

Question 2 of 10

Question 2 of 10

OCR software converts

Question 3 of 10

Question 3 of 10

The check digit in a barcode is used to

Question 4 of 10

Question 4 of 10

Tags that are read by radio waves, for example on goods in a warehouse, use

Question 5 of 10

Question 5 of 10

Touchscreens detect input by

Question 6 of 10

Question 6 of 10

RFID tags are read using

Question 7 of 10

Question 7 of 10

A barcode reader reads data using

Question 8 of 10

Question 8 of 10

A biometric input device uses

Question 9 of 10

Question 9 of 10

Reading the marks on multiple-choice answer sheets automatically uses

Question 10 of 10

Question 10 of 10

Magnetic Ink Character Recognition (MICR) is used mainly by

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.