Hamburg Design System – Hades Java

 ASIC EDA  No Responses »
Jun 012011
 

This is a framework for interactive simulation on OO Java. Consists of a graphical editor, the discrete-event based simulation engine(s), libraries of simulation components, a design and library browser, and tools like waveform viewer and scripting shell..

Hamburg Design System - Hades Java

Hamburg Design System – Hades Java

It is a tool for teaching basic digital systems design, and for research on system-simulation and hardware/software-cosimulation. All simulation models, signal types, and the simulation kernels can be subclassed, so that Hades can be used for other applications as well, not limited to digital electronics.

Hades applet collection.

“The current version of the Hades editor also includes a runtime flag to switch to view-mode: while all of the simulation functions and the option to change component parameters remain active, the editor disables all commands that change the circuit structure. Therefore, view-mode is ideal to let the user play with pre-defined circuits.”

 Posted by delabs at 5:33 pm  Tagged with:

Making a Logical Choice in Speed-n-Power

 Design  No Responses »
May 202011
 

The glue/interface Logic families are many. TTL and CMOS is what we all know. TTL is made of the trusted NPN and PNP transistors. CMOS logic is made of Mosfets/FET types.

Making a Logical Choice in Speed-n-Power

CD40XX and Intersil chips were the first CMOS types of IC that became popular. The former were versatile Building Blocks and the Latter created what i would call Flexible Advanced Public ASICs.

CMOS are low power consumption and TTL are nice Speed. In intel chips you could see the transition at 8031 to 80C31, a CMOS with good speed. Now its CMOS everywhere. FET’s rule.

Leroy has created an amazing page that helps you make a choice. I like HCT but these days it appears ACT is better and affordable too.

Glue Logic IC Family Selection Guide

 Posted by delabs at 4:01 pm  Tagged with:

Digital Tutor Gadgets with Canvas View

 Basic Electronics, Gadgets  No Responses »
Mar 282010
 
Digital Tutor Gadgets with Canvas View

The Digital Electronic Interactive Tutors Gadgets, have a canvas view now. That means in iGoogle and Google Sites, you can set it to full size with a embedded schematic. The Normal view is also available unchanged. Astable 555 Timer Flasher – 555 Blinks Two LED Lamps, Vary Part Values. LED Running lights CD4017 – Speed up a 555 Clock driving a LED Chain. Digital up down BCD counter – Flip-Flop, Binary Numbers, Logic Demo. Here is a Snapshot of a Live iGoogle Page showing a Digital Preset counter Gadget in Canvas view. Other Gadgets are Logic Gates Tutor and Digital [Read More ....]

 Posted by delabs at 12:58 pm  Tagged with:

Multi-Instrument Digital Assistant – PIC16F84A

 Embedded, Projects  No Responses »
May 072009
 
Multi-Instrument Digital Assistant - PIC16F84A

Multi-Instrument Digital Assistant – PIC16F84A “It contains four instruments in one unit: logic probe, single channel logic state analyzer, frequency counter and serial code receiver.” From Hobby Hound – DIY Electronics The Engineer’s Assistant – Erik Grindheim Serial code receiver The serial code receiver receives 42 bytes and displays them in both HEX and ASCII. The baud rate is selectale in 8 steps from 1200 to 115200. Logic state analyzer This is a one-channel logic state analyzer. It fetches 300 single bit samples in a selectable rate from 25ms to 1µS (40 Hz to 1 MHz in 16 steps). Frequency [Read More ....]

 Posted by delabs at 5:44 pm  Tagged with:

Digital Circuits – delabs

 Circuits, Data Interface  No Responses »
Jun 082008
 

Digital Circuits – delabs These circuits are based on CD40xx Chips and other. You can use 74HCT or any other series that is available. use one family for a particular project. These were used nearly two decades ago. Use it for learning, glue logic or to interface your uC designs to external devices. Do not make only Logic based designs like some below. It would be better to use a uC, CPLD or FPGA if you are building a complex gadget.Basic Digital Circuits Digital Timers, Counters and Clocks Sequential Timer CD40xx Sequential Timer 7217 Six Digit preset counter CD4518 Analog [Read More ....]

 Posted by delabs at 3:15 pm  Tagged with:
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