Q. The pin that is grounded for interfacing external EPROM is

View solution

Q. The step that is involved in the procedure of memory interfacing with 8051 is

View solution

Q. The device that is used for deriving chip select signals is

View solution

Q. For deriving chip selects of isolated memory or IO devices, the gates that are traditionally used are

View solution

Q. The current that is required for a LED for an appropriate glow is

View solution

Q. The maximum current that can be sinked totally by all the ports of 8051 is

View solution

Q. The number of LEDs that can be connected to a port of 8051, if all are expected to glow simultaneously is

View solution

Q. Which is true in interfacing 7 segment code display?

View solution

Q. After the display is selected by second port, then the digit (LED) glows for a duration of

View solution

Q. The number of scans of the complete 8-digit display that can be carried out in one second is

View solution

Q. To convert its current output into a voltage, the DAC 0808 is connected with

View solution

Q. The priority level of an interrupt of 8051 for which SI(serial interrupt) interrupt is programmed is

View solution

Q. The minimum duration of the active low interrupt pulse for being sensed without being lost must be

View solution

Q. If two interrupts, of higher priority and lower priority occur simultaneously, then the service provided is for

View solution

Q. For an interrupt to be guaranteed served it should have duration of

View solution

Q. The service to an interrupt will be delayed if it appears during the execution of

View solution

Q. The serial communication is

View solution

Q. The serial communication is used for

View solution

Q. The mcs 51 architecture supports

View solution

Q. The number of bits transmitted or received per second is defined as

View solution