HP 6034A User Manual page 152

FF
Flip-Flop-
Binary element with two states, set
and reset.When the flip-flop is set, its outputs
will be in tneir active states. When the flip-flop
is reset, its outputs will be in their inactive
states.
MUX
DEMUX
&
AND
- All inputs must be active for the output
to be active.
REG
21
OR
One or more inputs being active will cause
the output to be active.
SRG*
= i
EXCLUSIVE OR
- Output will be active when
one (and only one) input is active.
COMP
i
Buffer or Inverter
Without special
amplification.
1JT
= m m
and only m
- Output will be active when m
(and only m) inputs are active (m is replaced
with a number).
Logic Identity
- Output will be active only
when ail or none of the inputs are active (i.e.,
when all inputs are identical, output will be
active).
BIN/OCT
HPRI/BiN
0
Amplifier
- The output will be active only when
the input is active (can be used with polarity or
logic indicator at input or output to signify
inversion).
#/n
RAM
X/Y
Signal Level Converter or Code Converter
Input level(s) are different than output level(s),
or input code (X) is converted to output code
(Y) per weighted values or table.
ROM
EPROM
CTR
Counter-
Produces one output pulse each time
it receives a specific number of input pulses.
Multiplexer
- The output is dependent only on
the selected input,
Demultiplexer
- Only the selected output is a
function of the input.
Register
- Array of unconnected flip-flops that
form a simple register or latch.
Shift Register
- Register in which data can be
shifted from one stage to the next, the asterisk
indicates the number of stages.
Comparator
- The active output indicates
which of two or more sets of inputs is of
greatest magnitude.
Monstable (One-Shot) Multivibrator
- Out¬
put becomes active when the input becomes
active. Output remains active (even if the input
becomes inactive) for a period of time that is
characteristic of the device and/or circuit.
Binary-to-Octal Decoder
Converts a three-
line binary code to eight-line octal code.
High-Priority-to-Binary Encoder
- Encodes
the address of the highest active of eight inputs
to three-line binary code.
Digital-to-Analog Converter
- Output current
is a linear product of a digital word.
Random Access Memory
- Addressable
memory with read-in and read-out capability.
Read Only Memory
- Addressable memory
with read-out capability only.
Erasable Programmable Read Only
Memory
- Similar to a ROM in normal use, but
can be erased and programmed with special
equipment.
Figure B-2. Qualifiers and Functional Labels
B-2