HP 5385A User Manual

b. Replacing Y by an appropriate ind ication of t he
ou tput co de and label ing th e outputs wi th characters
that
refer to this co de as in Figure 8-27.
TRUTH TABLE
INPUTS
OUTPUTS
XI OCT
c b
a
i
i h
9
I e d
1
d
0 0 0 0
0
0
0 0 0 0
2
~
0 0
1 0 0
0
0
0 0 1
0 1 0 0
0 0
0 0 1 0
0 1
1
0
0
0
0 1 0 0
•
3
I
b
4
g
1 0 0 0 0 0
1 0 0
0
1 0 1 0 0
1
0 0
0 0
5
h
6
1
1
0
0
1
0
0 0 0 0
1
1 1 1 0 0 0 0 0 0
Fi gure 8-27. An X-Oc tal Code Converter
8-134. Alternatively, the general sym bo l may be
used
together w ith an ap propria te reference to a
table in whi ch the relationship betwe en th e inp u ts
a nd o ut puts is indicated. This is a r eco mm ended way
to symbolize a PROM after it has been programmed.
8-135. USE OF A CODER TO PRODUCE
AFFECTING INPUTS. If oft en occurs that a set of
affecting input s for dependency n otation is produced
by decod in g th e signals on certain i nputs to an
e
lement. In such a case u se can be made of the symbol
for a coder as an embed ded sym bol. See Fi g ure 8-28.
---
XIV
- 1
0 Gl
1
G2
- 2
2
V4
2/3 NS
-
C3
I
'
Fi g ure 8-28. Co der Producing Several Dependenrie .\
8-136. If all affec tin g inputs pr oduced by a co der are
of th e s ame type a nd th e ir id e ntif y in g numb ers
co rr espo nd with the number s s ho wn at th e outp uts of
the coder, Y ( in the qualif ying s ymbo l X/ YI may be
replaced by the
letter denot in g the type of depen -
dency. The ind icat ions of the aff ec tin g in puts s hould
then be omi tted. See Figure 8- 29 .
HP 5384A and HP 5385A
Service
U
--
y
MO
Ml
M2
Figure 8-29. Coder Pro dvcing One Type of Dependenry
8-137. Use of Binary Grouping to Produce
Affecting
Inputs
8-138. If all affecting inputs p ro du ced by a code r are
of the same type and have consec ut ive ident if y ing
numbers not necessarily c orr espon ding w ith the
number s that wou ld ha ve been show n at the ou tpu ts
of the coder , us e can be made o f the binar y grouping
sy mbol (see paragraph 8- 61 ). k exte rn al line s effec-
tively gene ra te 2k in ter na l inpu ts. The brac ket is
followed by th e l ette r denoting the typ e of depen-
dency followed by m1 / m2 . The m1 is to be replaced
by the smallest id entifying number a nd the m2 by the
large st one, as shown in Figure 8-30.
---
XiY
0
AO
1
A1
2 A2
=f:f-:;
1-
3
A3
-
4
A4
-
2-
s AS
-
4 -
s
AS
6
A6
I
7 A7
I
I
I
u--
=f:}~- ;
y
1 GS
-
G6
-
-
2 G7
I
G8
I
'
'
Figure 8- 30 . Use o( B inary Gro upi ng Symbo l
8 -1 9

HP 5385A Specifications

General

Brand	HP
Model	5385A
Category	Cash Counter
Language	English