Why the lower byte address bus(a0-a7) and data bus (d0-d7) are multiplexed?
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Can port 0 be used as input output port?
What are set up time & hold time constraints What do they signify Which one is critical for estimating maximum clock frequency of a circuit?
If the crystal oscillator is operating at 15 MHz. What will be the PCLK output of 8284?
Explain the difference between microcontroller and microprocessor?
What is 8255?
What are the sources of an interrupt?
Which bit of the flag register is set when output overflows to the sign bit?
What is an interrupt service routine?
Can 8259 be interfaced with 8085 via the trap pin?
What is tri-state logic?
The address capability of 8085 is 64 kb.explain?
What are the various criteria to choose the microcontroller?