ROMs retain data when                              

Related MCQs

• Why are ROMs called non-volatile memory?
• Refer to the given figures (a) and (b). A logic analyzer is used to check the circuit in figure (a) and displays the waveforms shown in figure (b). The actual analyzer display shows all four data outputs, Q0-Q3. The analyzer's cursor is placed at position X and all four of the data output lines show a LOW level output. What is wrong, if anything, with the circuit?
• Show from the truth table how an exclusive-OR gate can be used to invert the data on one input if the other input is a special control function.
• The condition occurring when two or more devices try to write data to a bus simultaneously is called ________.
• Why is a demultiplexer called a data distributor?
• What is data routing in a multiplexer?
• Another way to connect devices to a shared data bus is to use a                          
• How can parallel data be taken out of a shift register simultaneously?
• A serial in/parallel out, 4-bit shift register initially contains all 1s. The data nibble 0111 is waiting to enter. After four clock pulses, the register contains                  
• A bidirectional 4-bit shift register is storing the nibble 1101. Its input is HIGH. The nibble 1011 is waiting to be entered on the serial data-input line. After three clock pulses, the shift register is storing