Digital Electronic

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Combinatory Logic

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 silicon diodes
• 8 resistances
• 1 dual‐in‐line 16‐pin socket
Power supply: 5Vdc, 3W

DL 2203C

Sequential Logic

This board allows the study of the following subjects: MSI circuits in TTL logic, synchronous and asynchronous counters, shift registers, astable and monostable multivibrators, seven segment displays.
The board is composed of:
• 4 JK/MS flip‐flop
• 2 D flip‐flop
• a BCD synchronous counter
• a binary 4‐bit synchronous counter
• a BCD asynchronous counter
• a binary 4‐bit asynchronous counter
• 2 monostable multivibrators
• a shift register, 8‐bit SI‐SO
• 2 BCD 7‐segment decoders
• 2 7‐segment displays
• 2 BCD rotating switches
• 8 capacitors
• 2 linear potentiometers
Power supply: 5Vdc, 5W

DL 2203S

HCT – ECL – CMOS

This board allows the study of the following subjects:
• electrical characteristics of the integrated circuits of the various logic families: ECL, CMOS, HCT
• laws and principles for the assembling of interface circuits among the families
• logic gates
• multiplexed counters
• programmable shift registers
• bidirectional transmission gates
• level translators
The board is composed of three sections:
• the HCT section
• the ECL section
• the CMOS section
In each section various types of integrated circuits of the three different logic families are assembled.
Power supply: +5Vdc, +12Vdc, ‐5.2Vdc

DL 2203SFL

Advanced Sequential Logic

This board allows the study of the following circuits:
counters, frequency dividers, cyclic programmable timers, data transfer between two shift registers.
Furthermore, the board includes interface circuits and a connector to allow for direct and easy interfacing to systems, devices and circuits prepared by the students.
The board is composed of:
• 4‐bit comparators (2 off )
• 4‐bit BCD counters (2 off )
• 4‐bit shift registers (2 off )
• 8‐to‐1 line multiplexer
• 1‐to‐8 line demultiplexer
• NOT with open collector output (4 off )
• Optoisolators (4 off )
• a 22‐pole connector, step 3.96 mm
Power supply: 5Vdc

DL 2205INL

Programmable Logic

This board allows the study of RAM memories and circuits using RAMs for storing logic information and for data transfer to a BUS.
The board is composed of:
• 4 + 4 buffers with three‐state output
• 8‐bit latch register (type D)
• 4‐to‐10 line decoder
• RAM 1024 x 4
• hexadecimal keypad
• coder for hexadecimal keypad
• 8‐bit digital‐to‐analogue converter
• 8‐bit analogue‐to‐digital converter
• multiturn potentiometer for generating voltages between 0 and 10V
Power supply: 5Vdc

DL 2205PRL

Digital Board

This board allows the study of several digital circuits.
Technical features:
• 4‐bit comparator
• 4 JK‐flip flops, can also be used as RS flip flops
• 4 D‐flip flops
• 2 adders (4‐bit), with input and output carry
• Multiplexer, 4 channels
• Demultiplexer, 4 channels
• Shift register (4‐bit), parallel and serial operation possible, bi‐directional
• ALU, for conducting 16 arithmetic and 16 logical computing operations with 4‐bit dual numbers
• Binary counter (4‐bit), up/down counter
• 2 inverters
• 2 Schmitt triggers, inverting
• Units complements for negating a 4‐bit binary number
• Antivalence and equivalence gates
• EEPROM
• AD/DA converter 8‐bit
• Auxiliary section on board:
       ‐ 8 switches with led to generate logic level
       ‐ 8 logic probes with led for high and low level
       ‐ 2 seven segment led displays with BCD decoder
Built‐in power supply
Experiments
• Basic logic circuits
• Schmitt triggers
• Bistable multivibrators
• Monostable multivibrators
• Code converters, coders
• Arithmetic circuits
• Counting circuits
• Register circuits
• Multiplex mode Arithmetic Logic Unit
• Memory circuits
• Analog‐Digital converters
• Digital‐Analog converters

DL 2203SR

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ProductsCodeSheetTender specsManualsVideo
COMBINATORY LOGICDL 2203C
SEQUENTIAL LOGICDL 2203S
HCT-ECL-CMOSDL 2203SFL
ADVANCED SEQUENTIAL LOGICDL 2205INL
PROGRAMMABLE LOGICDL 2205PRL
DIGITAL BOARDDL 2203SR