Programming instructions

TIL Components
 National Instruments Corporation 9-9 Multisim Component Reference Guide
9.1.14 BCD_7SEG_DCD
This device is a generic BCD to 7 -segment decoder, which is used to convert the output of a
BCD counter into a form that will drive a 7-segment display.
9.1.15 Parity Generator/Checker
This 9-bit (8 data bits plus 1 parity bit) parity generator/checker features odd/even outputs and
control inputs to facilitate operation in either odd- or even-parity applications.
Parity generator/checker truth table:
9.1.16 Quad 2-to-1 Data Sel/MUX
This device contains inverters and drivers to supply full on-chip data selection to the four
output gates. It presents inverted data to minimize propagation delay time.
A 4-bit word is selected from one of two sources and is routed to the four outputs.
INPUTS OUTPUTS
S OF H’s AT A
THRU H
EVEN ODD
S
EVEN
S
ODD
Even 1 0 1 0
Odd 1 0 0 1
Even 0 1 0 1
Odd 0 1 1 0
X1100
X0011
ComponentRef.book Page 9 Thursday, December 7, 2006 10:12 AM