Computer organization mcqs parallel ports
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The ..... circuit enables the generation of the ASCII code when the key is pressed.
Question 1 Explanation:
The signal generated upon the pressing of a button is encoded by the encoder circuit into the corresponding ASCII value.
To overcome multiple signals being generated upon a single press of the button, we make use of .....
Question 2 Explanation:
When the button is pressed, the contact surfaces bounce and hence it might lead to the generation of multiple signals. In order to overcome this, we use Debouncing circuits.
The best mode of connection between devices which need to send or receive large amounts of data over a short distance is .....
Question 3 Explanation:
The parallel port transfers around 8 to 16 bits of data simultaneously over the lines, hence increasing transfer rates.
The output of the encoder circuit is/are .....
ASCII code and the valid signal
None of the mentioned
Question 4 Explanation:
The encoder outputs the ASCII value along with the valid signal which indicates that a key was pressed.
The disadvantage of using a parallel mode of communication is .....
It is costly
Leads to erroneous data transfer
Security of data
All of the mentioned
Question 5 Explanation:
The parallel mode of data transfer is costly as it involves data being sent over parallel lines.
There are 5 questions to complete.