Discuss direct memory access, Electrical Engineering

Assignment Help:

Discuss DMA definition.

Direct memory access (DMA) is a process wherein an external device takes over the control of system bus by the CPU. Direct memory access is for high-speed data transfer by mass storage peripherals, for illustration magnetic tape, hard disk drive, CD-ROM and sometimes video controllers. For instance, a hard disk may boast a transfer rate of 5 M bytes per second, which is 1 byte transmission every 200 ns. To make that data transfer with the CPU is both undesirable and unessential.


Related Discussions:- Discuss direct memory access

Find the phasor values with peak magnitude, Q. For the circuit shown in Fig...

Q. For the circuit shown in Figure, find the phasor values (with peak magnitudes) of ¯I, ¯V R , ¯V L , and ¯V C by using PSpice.

Determine whether the systemnoise, The expression given in Problem for (S 0...

The expression given in Problem for (S 0 /N 0 )PCM is plotted for a sinusoidal message in Figure to show the performance curves for a PCM system using a polar waveform. (a) Comm

The resistance of a 7 m length of the similar cable, The resistance of a 2 ...

The resistance of a 2 m length of cable is 2.5?. Verify (a) the resistance of a 7 m length of the similar cable and (b) the length of the same wire when the resistance is 6.2

Find ia for which the generator efficiency is maximum, Q. A separately exci...

Q. A separately excited dc generator with an armature-circuit resistance Ra is operating at a terminal voltage Vt, while delivering an armature current Ia, and has a constant loss

Complement method of binary subtraction , complement method of binary subtr...

complement method of binary subtraction This  method is  used for  subtraction  as subtraction is  converted to addition. Use following  steps  to perform  subtraction ;

Uninterruptable power supply , Uninterruptable power  Supply An unint...

Uninterruptable power  Supply An uninterruptible  power supply  provides emergency power when  utility power  is not  available. It  maintains the supply  under  all condition

Design a circuit using op-amp amplifier, Design a circuit using op-amp that...

Design a circuit using op-amp that will reject the 60kHz power line noise and also reject high signal frequency above 800Khz. The stop-band width around the 60kHz centre frequency

Find the voltage gain of the overall circuit, Q. Find the voltage gain of t...

Q. Find the voltage gain of the overall circuit? (a) Consider the circuit of the inverting amplifier shown in Figure (a), including an ideal op amp. Show that the voltage gain

Show the bode plot, Question: (a) Show the Bode Plot, showing the relev...

Question: (a) Show the Bode Plot, showing the relevant corner frequencies and slopes, for the unity feedback system whose open loop transfer function is given by: (b) T

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