Author Question: A circuit used to make values stable when the source is constantly changing is called A) ... (Read 90 times)

yoooooman · **on:** Jul 28, 2018

A circuit used to make values stable when the source is constantly changing is called

A) analog-to-digital converter. B) sample-and-hold.
C) programmable gain. D) multiplexer.

Question 2

When a key is pressed in the 8051, the instruction MOV P0, 0F0H will

A) drive the columns LOW and float the rows. B) drive the rows HIGH and float the columns.
C) drive the columns HIGH and float the rows. D) drive the rows LOW and float the columns.