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B2 LOGIC 3

Products List

Now digital circuit design is a snap with B2 Logic. Select from hundreds of parts from a wide variety of families to build your circuit. Run the interactive simulation and test it by placing probes. As the simulation progresses, the signal values change in the probes in the circuit, as well as in a timing diagram and in a spreadsheet. You can change the input values by clicking directly in the inputs in the circuit.

Features

Fully Integrated and Interactive

B2 Logic allows you to build the circuit on the screen and test it by placing probes in the circuit. As the simulation progresses, the signal values change in the probes in the circuit, as well as in a timing diagram and in a spreadsheet. You can change the input values by clicking directly in the inputs in the circuit.

Multiple Components

There are over 100 primitives of components available.

Multiple Libraries

B2 Logic comes with five built-in libraries. You can also create your own libraries.

Customize Device Properties

You can modify propagation delays and other characteristics of devices in your circuit, and of the models of devices in the libraries.

Flexible Analysis

With a click of the mouse, you can specify initial conditions and delay times of the circuit.

Simulation Diagnostics

B2 Logic reports timing violations on dynamic components (e.g. flip-flops) to the user while the circuit is running.

Accurate Simulation

B2 Logic simulates the propagation delays and set-up and hold times for each device according to the specifications in the Logic Data Books.

Multiple Signal Values

The value of a signal consists of both signal level and strength. There are three levels and four strengths.

Subcircuits

You can build a circuit, save it, and then open it as a component in another circuit. You can probe the inside of a subcircuit.

Buses

B2 Logic allows you to group a set of wires together into a single bus, which keeps large circuits compact and easy to edit and debug.

Generic PLD Simulation

Simulate PLD's from truth tables, equations, or Espresso format tables. B2 Logic supports internal flip-flops. You can simulate ROM from data tables.

Program Limitations

B2 Logic is not a printed circuit board design package. It is useful for verifying design ideas and for analyzing the timing of circuits. B2 Logic circuits are not currently portable to other programs. B2 Logic does not allow import of third party parts libraries.

Review of Logic 2.2 in IEEE circuits and devices, July 1993
1 (low) to 5 (high) Was it easy to use? Did it do what it advertised? Was it worth the price? No. of hours to learn software	5 5 4 .5	5 5 5 .5

Review of Logic 2.2 in IEEE circuits and devices, July 1993
Input Ports Bidirectional Port Output Probe Seven Segment Display Bus Connectors Clock High Voltage Ground Pull-Down Resistor Pull-Up Resistor Buffer (Delay Element) S-R Latch Clocked SR Latch JKFF w/ Reset & Clear PLD (generic) Net Connectors Decoder (generic) D Flip Flop (generic) RAM 16x4 RAM 1024x8 RAM 4096x8 ROM 32x8 ROM 256.32 ROM 4096x8 Seven Segment Display Toggle Flip Flop User-defined circuit 7400/4 2-Inp. NAND 7401/4 2 Inp. NAND OC 7402/4 2 Inp. NOR. 7404/6 Inverter 7405/6 Inverter OC 7406/6 Inv. Buff OC 7407 Buffer OC 7408/4 2 Inp. AND	7409/4 2 Inp. AND OC 7410/3 3 Inp. NAND 7411/3 3 Inp. AND 7412/3 3 Inp. NAND OC 7415/3 3 Inp. AND OC 7420/2 4-Inp. NAND 7421/2 4-Inp. AND 7422/2 4-Inp. NAND OC 7425 NOR w/Strobe 7426/3 3 Inp. NAND Buff OC 7427/3 3 Inp. NOR 7428/4 2 Inp. NOR Buff OC 7430 8-Inp. NAND 7432/4 2-Inp. OR 7433/4 2-Inp. NOR Buff OC 7437 NAND Buffer 7438/4 2 Inp. NAND Buff OC 7442 BCD/Decimal Converter 7445 Decimal Decoder/Buffer 447 BCD/ 7 Seg Decoder 7449 BCD/ 7 Seg Decoder 7451 AND-OR-Invert 7473/2 JK Flip Flop 7474/2 D Flip Flop 7475 Quad D type latch 7476/2 JK Neg Edge-Trig FF 7477 Quad D type latch 7482 Adder 7485 Comparator 7486/4 Exclusive OR 7489 Binary Rate Multiplier 7490 Decade Counter 7491 8 bit shift Register 7492 Divide by 12 Counter	7493 Binary Counter 74109/2 JK' FF 74112/2 Neg Edge FF 74113/2 JK Neg- Edge FF w/Preset 74123 Monostable Vibrator 74126 A Tri State Buffer 74136/4 X-OR OC 7418 Decoder 3-to-8 74139 A Decoder 2-to-4 74148 Priority Encoder 74151 Multiplexer 1-of-8 74153 Multiplexer 1-of-4 74157 Multiplexer 1-of-2 74161 4-Bit Binary Ctr 74163A 4-Bit Binary Ctr 74169B Up-Down Binary Ctr 74175 Quad D FF 74181 Arithmetic Logic Unit 74192 Up-Down (dec) 74193 Up-Down (hex) 74194 4-Bit Univ Shift Reg 74244 Octal Buffer 74245 Inv. Octal Buffer 74245 Inv. octal buffer 74266/4 X-NOR OC 74279 R' S' Latch 74280 Parity generator 74373 Octal Latch 74374 Octal D Reg 74381 ALU (8fn) 74393 4-Bit Binary Ctr 74541 Octal Buffer 74646 Reg/X-ceiver

Device Primitives

Review of Logic 2.2 in IEEE circuits and devices, July 1993
Input Ports Bidirectional Port Output Probe Seven Segment Display Bus Connectors Clock High Voltage Ground Pull-Down Resistor Pull-Up Resistor Buffer (Delay Element) S-R Latch Clocked SR Latch JKFF w/ Reset & Clear PLD (generic) Net Connectors Decoder (generic) D Flip Flop (generic) RAM 16x4 RAM 1024x8 RAM 4096x8 ROM 32x8 ROM 256.32 ROM 4096x8 Seven Segment Display Toggle Flip Flop User-defined circuit 7400/4 2-Inp. NAND 7401/4 2 Inp. NAND OC 7402/4 2 Inp. NOR. 7404/6 Inverter 7405/6 Inverter OC 7406/6 Inv. Buff OC 7407 Buffer OC 7408/4 2 Inp. AND	7409/4 2 Inp. AND OC 7410/3 3 Inp. NAND 7411/3 3 Inp. AND 7412/3 3 Inp. NAND OC 7415/3 3 Inp. AND OC 7420/2 4-Inp. NAND 7421/2 4-Inp. AND 7422/2 4-Inp. NAND OC 7425 NOR w/Strobe 7426/3 3 Inp. NAND Buff OC 7427/3 3 Inp. NOR 7428/4 2 Inp. NOR Buff OC 7430 8-Inp. NAND 7432/4 2-Inp. OR 7433/4 2-Inp. NOR Buff OC 7437 NAND Buffer 7438/4 2 Inp. NAND Buff OC 7442 BCD/Decimal Converter 7445 Decimal Decoder/Buffer 447 BCD/ 7 Seg Decoder 7449 BCD/ 7 Seg Decoder 7451 AND-OR-Invert 7473/2 JK Flip Flop 7474/2 D Flip Flop 7475 Quad D type latch 7476/2 JK Neg Edge-Trig FF 7477 Quad D type latch 7482 Adder 7485 Comparator 7486/4 Exclusive OR 7489 Binary Rate Multiplier 7490 Decade Counter 7491 8 bit shift Register 7492 Divide by 12 Counter	7493 Binary Counter 74109/2 JK' FF 74112/2 Neg Edge FF 74113/2 JK Neg- Edge FF w/Preset 74123 Monostable Vibrator 74126 A Tri State Buffer 74136/4 X-OR OC 7418 Decoder 3-to-8 74139 A Decoder 2-to-4 74148 Priority Encoder 74151 Multiplexer 1-of-8 74153 Multiplexer 1-of-4 74157 Multiplexer 1-of-2 74161 4-Bit Binary Ctr 74163A 4-Bit Binary Ctr 74169B Up-Down Binary Ctr 74175 Quad D FF 74181 Arithmetic Logic Unit 74192 Up-Down (dec) 74193 Up-Down (hex) 74194 4-Bit Univ Shift Reg 74244 Octal Buffer 74245 Inv. Octal Buffer 74245 Inv. octal buffer 74266/4 X-NOR OC 74279 R' S' Latch 74280 Parity generator 74373 Octal Latch 74374 Octal D Reg 74381 ALU (8fn) 74393 4-Bit Binary Ctr 74541 Octal Buffer 74646 Reg/X-ceiver

System Requirements

PC compatible	Macintosh	Powe rMacintosh
286 processor or higher, 386 recommended 2 Mb RAM min. 4 Mb recommended Microsoft Windows 3.1 or later	System 6.0 or later 2 Mb RAM min. w/ system 6.0 4 Mb RAM min. w/ system 7.0 or later	4 Mb RAM min. w/ system 7.0 or later

View additional simulation softwares:
Products List

B2 Spice v5
B2 Spice A/D v4
B2 Spice 2
B2 Logic 3