Download Sharp VL-DC1E Programming instructions

ComponentRef.book Page 46 Thursday, December 7, 2006 10:12 AM
TTL
BCD-to-seven-segment decoder/driver truth table:
DECIMAL INPUTS
OR
RBI
FUNCTION LT
D
C
B
A
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
BI
RBI
LT
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
X
0
X
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
X
0
X
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
X
0
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
X
0
X
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
X
1
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
X
BI/
RBO
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
OUTPUTS
NOTE
a
b
c
d
e
f
g
1
0
1
1
0
1
1
1
1
1
0
0
0
1
0
0
0
0
1
1
1
1
1
1
0
0
1
1
1
0
0
1
0
0
0
0
0
1
1
1
0
1
1
1
1
1
1
1
0
1
0
0
0
0
0
0
1
1
0
1
1
0
1
1
0
1
1
1
1
0
1
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
0
0
0
1
0
0
0
1
1
0
0
0
1
1
1
0
1
1
0
0
1
1
1
0
0
0
1
0
0
1
1
1
1
1
0
1
1
1
1
1
1
1
0
0
0
1
1
1
1
2
3
4
Notes:
1. The blanking input (BI) must be open or held at a high logic level when output
functions 0 through 15 are desired. The ripple-blanking input (RBI) must be open or
high if blanking of a decimal zero is not desired.
2. When a low logic level is applied to the blanking input (BI), all segment outputs are
low regardless of any other input.
3. When ripple-blanking input (RBI) and inputs A, B, C, and D are at a low level with
the lamp test input high, all segment outputs go low and the ripple-blanking output
(RBO) goes to a low level (response condition).
4. When the blanking input/ripple-blanking output (BI/RBO) is open or held high and
a low is applied to the lamp-test input, all segment outputs are high.
Multisim Component Reference Guide
6-46
ni.com