Tektronix 7613 User Manual

LOGIC FUNDAMENTALS
Digital logic techniques are used to perform many
functions within this instrument. The function and opera-
tion of the logic circuits are described using logic sym-
bology and terminology. This portion of the manual is
provided to aid in the understanding of these symbols and
terms. The following information is a basic introduction to
logic concepts, not a comprehensive discussion of the
subject. For further information on binary number systems
and the associated Boolean Algebra concepts, the derivation
of logic functions, a more detailed analysis of digital logic,
etc., refer to the following textbooks:
TEKTRONIX Circuit Concepts booklet, “Digital Con-
cepts’, TEKTRONIX Part No. 062-1030-00.
Robert C. Baron and Albert T. Piccirilli, “Digital Logic
and Computer Operation’, McGraw-Hill, New York,
1967.
Circuit Description—7613/R7613 Service
Thomas C. Bartee, ‘Digital Computer Fundamentals’,
McGraw-Hill, New York, 1966.
Yaohan Chu, “Digital Computer Design Fundamentals”,
McGraw-Hill, New York, 1962.
Joseph Millman and Herbert Taub, ‘Pulse, Digital, and
Switching Waveforms”, McGraw-Hill, New York,
Chapters 9 — 11, 1965.
Symbols
The operation of circuits within the 7613 which use
digital techniques is described using the graphic symbols set
forth in military standard MIL-STD-806B. Table 3-1 pro-
vides a basic logic reference for the logic devices used
within this instrument. Any deviations from the standard
symbology, or devices not defined by this standard will be
described in the circuit description for the applicable
device.
TABLE 3-1
Basic Logic Reference
Device Symbol Description Input/Output Table
AND gate A device with two or more inputs Input Output
and one output. The output of the A B x
A— AND gate is HI if and only if all of
| oR x the inputs are at the HI state LO LO LO
B—
,
LO
HI
LO
HI LO LO
Hi HI Hi
NAND gate A device with two or more inputs Input tput
and one output. The output of the
a_i NAND gate is LO if and only if all A B xX
x of the inputs are at the HI state. LO LO HI
B
|
LO
HI
Hi
HI LO HI
HI HI LO
OR gate A device with two or more inputs Input Output
and one output. The output of the.
A OR gate is HI if one or more of the A B X
x inputs are at the HI state. LO LO LO
8 _) >> LO HI HI
HI LO HI
Hi HI HI
NOR gate A device with two or more inputs Input Output
and one output The output of the
A NOR gate is LO if one or more of A B X
-) > x the inputs are at the HI state. LO LO Ht
8 LO HI LO
HI LO LO
HI fall LO
7613

Tektronix 7613 Specifications

General

Brand	Tektronix
Model	7613
Category	Test Equipment
Language	English