INTRODUCTION TO MICROPEOCESSOR
MODEL OF MICROPROCESSOR
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What is correct range of frequency for 8257?
|
|
500Hz to 3MHz
|
|
|
250Hz to 2MHz.
|
|
|
250Hz to 3MHz.
|
|
|
500Hz to 2MHz.
|
Explanation:
Detailed explanation-1: -It requires a single phase clock. Its frequency ranges from 250Hz to 3MHz. It operates in 2 modes, i.e., Master mode and Slave mode.
Detailed explanation-2: -Which of the following is a property of RST 7.5 interrupt? Explanation: RST 7.5 is a maskable interrupt with 2nd highest priority after RST-4.5. It uses only the edge-triggered signal. It is a vectored interrupt and its vectored address is 003C H.
Detailed explanation-3: -So, the latch is used as it acts as good output port.
Detailed explanation-4: -An 8-bit microprocessor can process 8-bit data at a time. The word length ranges from 4 bits to 64 bits depending upon the type of the microcomputer.
There is 1 question to complete.