A Device Register is the view any device presents to a programmer. Each programmable bit in the device is presented with a logical address and it appears as a part of a byte in the device registers. Then programming of these bits can be achieved by reading from or writing to these device registers. Most devices have at least these two device registers:
- Data Register: to which the data to be input/output is read from/written to the device.
- Control/Status: Which selects/shows the mode of operation of the device.
Famous quotes containing the words device and/or register:
“Johnson did not answer ...; but talking for victory and determined to be master of the field, he had recourse to the device which Goldsmith imputed to him in the witty words of one of Cibber’s comedies. “There is no arguing with Johnson; for when his pistol misses fire, he knocks you down with the butt end of it.””
—Samuel Johnson (1709–1784)
“A funeral is not death, any more than baptism is birth or marriage union. All three are the clumsy devices, coming now too late, now too early, by which Society would register the quick motions of man.”
—E.M. (Edward Morgan)