Electronics

Page
1

of
3

Electronics










Code

Specifications

Quantity

DL
2
203C

COMBINATORY LOGIC
-

didactic equipment



The module can be arranged on a pair of supports for a better reading of the block diagrams and an easier use
of the connecting leads.

This module must show a schematic diagram and 2 mm terminals for the

electrical connection.

The case of the module must be made in metal material.

This board allows the study of the following combinatory circuits: adders, subtractors, multipliers, code
converters, multiplexers and demultiplexers. The board is composed of:

• 4 AND (2
-
input)

• 3 AND (3
-
input)

• 12 NAND (2
-
input)

• 4 NAND (4
-
input)

• 2 NAND TRIGGER (4
-
input)

• 4 OR (2
-
input)

• 2 OR (3
-
input)

• 1 OR (4
-
input)

• 4 NOR (2
-
input)

• 2 NOR (4
-
input)

• 4 EX
-
OR (2
-
input)

• 6 inverters

• 2 AOI (2 and 3 input)

• 12 sili
con diodes

• 8 resistances

• 1 dual
-
in
-
line 16
-
pin socket

Power supply: 5Vdc, 3W


Experiments:

LOGICAL NETWORKS AND TRUTH TABLES

Checking the operation of a NOT gate

Checking the property of dual complementation


Page
2

o
f
3

Code

Specifications

Quantity

Checking the operation of a 2
-
inputs AND gat
e

Checking the operation of a 3
-
inputs AND gate

Checking the commutative property for AND operator

Checking the associative property for AND operator

Connecting a 4
-
inputs AND operator

Checking the operation of a 2
-
inputs OR gate

Checking the operation of
a 4
-
inputs OR gate

Checking the commutative property for OR operator

Checking the associative property of the OR operator

Checking of a 5
-
inputs OR operator

Checking the operation of AND and OR operators as control operators

in data transfer

Checking the o
peration of2
-
inputs EX
-
OR gate

Checking the commutative property for EX
-
OR operator

Checking the operation of EX
-
OR operator as controllable NOT operator


LOGICAL FUNCTIONS AND CANONICAL FORMS OF A FUNCTION

Functional checking of EX
-
OR canonical forms

Func
tional checking of the first canonical form for a function assigned through its t.t.

Functional checking of a logical circuit through comparison between the t.t. of its logical function

Checking a logical circuit through comparison with the t.t. of its log
ical function

Functional checking of a logical circuit through comparison with t. t. of its logical function

Functional checking of a logical circuit through comparison with t. t. of its logical function


THE BOOLEAN ALGEBRA THEOREMS AND THE TECHNIQUES TO
SIMPLIFY LOGICAL FUNCTIONS

Checking Boolean algebra theorems: single variable theorems

Checking the Boolean algebra theorems: theorems concerning a variable and a constant

Checking the Boolean algebra theorems: the absorption theorems

Checking the Boolean
algebra theorems: De Morgan's theorem

Functional checking of logical function minimization through the Karnaugh map

Functional checking of equivalent forms of logical function minimized through the Karnaugh map


Page
3

o
f
3

Code

Specifications

Quantity

LOGICAL OPERATORS NAND AND NOR

Checking the
operation of the NAND logical operator (2
-
inputs NAND gate, 4
-
inputs NAND gate and 4 inputs
NAND gate with Schmitt trigger inputs)

Checking the properties of NAND operator

Checking the inapplicability of associative property for NAND operator

Checking the
operation of logical operator NOR (2
-
inputs NOR gate and 4
-
inputs NOR gate)

Checking the properties of NOR operator

Checking the inapplicability of associative property for NOR operator

Checking the operation of NAND and NOR operators as control operators
in data transfer

Functional checking of algebraic simplification of logical function realized with universal operators


ANALYSIS OF COMBINATIONAL LOGICAL NETWORKS

Lamp control from two points with switches

Lamp control from three points with switches

Autom
atic event selection

Event selection through diode matrix (Diode AND gate)

Automatic 4
-
inputs priority selector

Process control

Comparator for two binary circuits

Adders

Parallel 2
-
bits adder

Subtractors

Parallel 2
-
bits subtractor

Multiplier

Decimal
-
> BCD

8421 binary code converter

Decimal
-
> BCD 8421 binary code converter

Data selector or 4
-
to
-
1 line multiplexer

Data selector or 2
-
to
-
1 line multiplexer for 3
-
bits data

1
-
to
-

4 lines demultiplexer

Parity controller/generator