Define hrq, Electrical Engineering

Assignment Help:

Define HRQ?

The hold demand output requests the access of the system bus. In non- cascaded 8257 systems, this is linked with HOLD pin of CPU. In cascade mode, this pin of a slave is linked with a DRQ input line of the master 8257, whereas that of the master is linked with HOLD input of the CPU.

 


Related Discussions:- Define hrq

Explain the different coupling schemes used in amplifiers, Q. Explain the d...

Q. Explain the different coupling schemes used in amplifiers? When amplifiers are cascaded, it is necessary to use a coupling network between the output of one amplifier and th

Signal., explain about signal

explain about signal

Find the equivalent series impedance, Q. 10-kVA, 4800:240-V, 60-Hz, single-...

Q. 10-kVA, 4800:240-V, 60-Hz, single-phase transformer has an equivalent series impedance of 120 + j300  referred to the primary high- voltage side. The exciting current of the tr

What is the voltage controlled resistance region, Q. What is the Voltage co...

Q. What is the Voltage controlled resistance region?  In this region the JFET can actually be employed as a variable resistor whose resistance is controlled by the applied gate

Compute the full-load speed, A 10 - hp, 250-V shunt motor has an armature c...

A 10 - hp, 250-V shunt motor has an armature circuit resistance of 0.5  and a ?eld resistance of 200 . At no load, rated voltage, and 1200 r/min, the armature current is 3 A. At

Emitter follwer, Ask questertion #Minimum 100 words accepted#

Ask questertion #Minimum 100 words accepted#

What is ringer circuit in telephone hand set, Q. What is Ringer Circuit in ...

Q. What is Ringer Circuit in telephone hand set? Purpose of the ringer is to alert destination party of incoming calls. Audible tone from the ringer should be load enough to be

Determine required output power, Q. Two stations (using identical antennas,...

Q. Two stations (using identical antennas, with diameters of 50λ and aperture ef?ciencies of 0.6 at 35 GHz) are separated by 30 km. With negligible antenna losses, antenna connecti

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd