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1.
How many types of Interfacing?
2.
In which type of communication, the interface gets a single byte of data from the microprocessor and sends it bit by bit to the other system serially and vice-a-versa?
3.
Which of the following are known as Higher Address Bus?
4.
In which mode, the CPU periodically reads an internal flag of 8279 to check whether any key is pressed or not with key pressure?
5.
What is true about Encoded Mode?
6.
Which pin is used to blank the display during digit switching?
7.
Which mode allows 8/16 character multiplexed displays to be organized as dual 4-bit/single 8-bit display units?
8.
DMA stands for?
9.
Which of the following is not true features of 8257?
10.
What is correct range of frequency for 8257?