Programming instructions

4000 Series ICs
 National Instruments Corporation 7-17 Multisim Component Reference Guide
NOR gate truth table:
7.2.34 4027 (Dual JK FF (+edge, pre, clr))
This device contains two independent JK flip-flops with separate preset and clear inputs.
Sample JK flip-flop truth table:
7.2.35 4028 (1-of-10 Dec)
The 4028 device is a 4-bit BCD to 1-of-10 active HIGH decoder.
I
1
I
2
I
3
O
1
0001
0100
1000
1100
0010
1010
0110
1110
SD CD CP J K On On
10XXX10
01XXX01
11XXX11
00 · 00 Hold
00 · 1010
00 · 0101
0 0 · 1 1 Toggle
· = triggers on POSITIVE pulse
ComponentRef.book Page 17 Thursday, December 7, 2006 10:12 AM