1) Explain the use of 8251 chip.
2) Write down the various types of methods used for data transmission?
3) What are the different programmed data transfer methods?
4) What do you mean by synchronous data transfer?
5) What do you mean by asynchronous data transfer?
6) What are the functional types used in control words of 8251?
7) What are the basic modes of operation of 8255?
8) Write down the features of mode 0 in 8255.
9) What are the features which are used in mode 1 in 8255?
10) What are the signals used in input control signal & output control signal?
11) Write down the features used mode 2 in 8255?
12) What are the various types of write operations used in 8253?