Logic devices 1
Registers are comprised of this logic device
D latch
a PLC output module interfaces with the CPU using this device
optocoupler
What does PLC stand for?
Programmable logic controller
This is the effect on the output of an SR latch when both S and R are low.
Latch
This type of memory is volatile
RAM
Triple play!!!!
Name 3 Combinational logic devices
Encoders, Decoders, Muxes, Demuxes
Name the two types of PLC input and output signals
Both or nothing!
Digital, Analog
What instruction is used for outputs?
OTE - output enable
The device used to process information sensed by the APS (absolute positioning system)
Encoder
This type of memory is programmable but only once!
PROM
How many devices are needed for a 64 bit register
64
TRIPLE PLAY
Name any 3 sections of a PLC
Inputs, outputs, CPU, power supply
Instructions can be addressed to these
inputs and outputs.
This is the effect on the outputs of a flip flop when both J and K are high
outputs toggle
This memory type is used in SSD's and Thumbdrives
EEPROM
How many devices are needed for a counter that counts from 0-7
3
If device 1 is supplying voltage to device 2 than device 1 is this:
Sourcing
TRIPLE PLAY
PLC's have many advantages, name 3
$$$
less down time and breakdowns
less mistakes
easy to implement changes
less space
among others
TRIPLE PLAY
name 3 Sequential logic devices
Latches, FF, Registers, Counters
This type of memory can have single bits erased
EAPROM
This type of triggering occurs on the rise or fall of the clock signal
Edge
A PLC has the ability to add modules as needed, this is referred to as what type of PLC :
Modular
What instruction will allow logic to flow if its addressed to a PLC input that is wired to a normally closed stop button WITHOUT PUSHING THE BUTTON
Make
This is the purpose of the Enable pin of a gated device
Isolates inputs from outputs.
This type of memory is erasable by shinning a UV light on a quarts window on the top of an IC
EPROM