Discussion
Arrange the following in ascending chronological order of their appearance :
(i) Manual type writer
(ii) Laser printer
(iii) Dot-matrix printer
(iv) Inkjet printer
Codes :
Answer: A
The typewriter came first, then the dot-matrix printer (1970s), then the inkjet printer (about 1976 for the first commercial models) and then the laser printer in wide use (1980s). So the order is (i), (iii), (iv), (ii), and the options that place the laser printer earlier, or the typewriter later, reverse this.
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