comp sci/electronics help (really simple)

kiwi

kiwi

kiwi

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is this a NOR gate?

228263543_001efaa3d2_d.jpg
 
The_KiD said:
been a while since I did electronics, but isnt there something missing? like the gate?
Click to expand...

each of those is the signal..

so the output you only have a signal when neither A or B has an output.
 
OR Gate:

A 0 0 1 1

B 0 1 0 1

Outout 0 1 1 1

A or B can be on for the Output to be On.

NOR is the opposite so A or B can be on for output to be off :)
 
a bit more required this time but i'm revising this for a retake on thursday and i'm still crap. there's a few questions worth a fair few marks which i have no idea on which i would be grateful for some input on. pointers would be great, full anwers, unbelievably so. here goes:

1) The newest ARM processors allow 32-bit quantities to be loaded from arbitary addresses. Outline a sequence of operations the hardware can perform th achive this result. Your answers should be "backwards compatible" with older ARMs - where loads had to be aligned - eithout thr loss of performance. (You may wish to use pseduo-code).

2) Sketch and label a data path which inplements the dfate input interface to your answer above.
 
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