Lubna Pharmacy Interview Questions and Answers

Design a sequential circuit to detect the sequence 001001.

• Use flip-flops to store the previous bits in the sequence

• Implement a state machine with states corresponding to each bit in the sequence

• Transition between states based on input and current state

• Output a signal when the final state is reached

8085 microcontroller is a popular 8-bit microprocessor used in various electronic devices.

• 8085 microcontroller is an 8-bit microprocessor introduced by Intel in 1977.

• It has a 16-bit address bus which can access up to 64 KB of memory.

• The microcontroller has a set of registers, ALU, control unit, and instruction decoder.

• It operates on a single +5V power supply and can run at a maximum clock speed of 3 MHz.

• Instructions are fetched from memory and executed sequentially by the mic...read more

To divide the frequency of the clock using 3, you can use a divide-by-3 counter circuit.

• Use a divide-by-3 counter circuit to divide the clock frequency by 3.

• Connect the clock signal to the input of the counter circuit.

• Obtain the divided clock signal at the output of the counter circuit.

• Example: If the input clock frequency is 12 MHz, the output frequency will be 4 MHz after dividing by 3.

Frequency of clock 3 can be divided using a frequency divider circuit.

• Use a frequency divider circuit to divide the frequency of clock 3 by a specific factor.

• For example, a divide-by-2 circuit will halve the frequency of clock 3.

• Choose the appropriate type of frequency divider circuit based on the required division factor.

Wireless communication is the transfer of information between two or more points without the use of physical connection wires.

• Uses electromagnetic waves to transmit data

• Common examples include Wi-Fi, Bluetooth, and cellular networks

• Allows for mobility and flexibility in communication