Objective Questions 

Q.1. What is the address range in 80286?


 a) 1 Mbytes      b) 2 Mbytes        c) 16 Mbytes      d) 32 Mbytes 

Q.2. Which are the two modes of 80286? 

a) Real mode and protected mode       b) Mode1 and mode2 

c) Alternate and main            d) Mode A and mode B 

Q.3. What does USART stand for? 

a) universal synchronous asynchronous receiver transmitter 

b) unique synchronous asynchronous receiver transmitter

 c) universal sync address receiver transmitter 

d) unique sync address receiver transmitter 

Q.4. What rate can define the timing in the USART? 

a) bit rate             b) baud rate

 c) speed rate       d) voltage rate

 Q.5. Which is the most commonly used USART?

 a) 8253            b) 8254 

c) 8259             d) 8251

 Q.6. Which determines the mode 1 in the Intel 8253? 

a) interrupt on terminal count             b) programmable one-shot 

c) rate generator                      d) square wave rate generator 


ANSWER-

1)  C        2)  A    3) A     4) B       5) D     6) B