12 Results for "TTL computer"

WDC-1 a "Working Digital Computer"
Details from WDC-1 a "Working Digital Computer"
The Binary Encoder The first Working Digital Computer module described in the book was the Binary Encoder. Here's what it looked like: It's job was to accept decimal input from the operator and convert it into binary codes the computer could use. ...

The Diode Clock
Details from The Diode Clock
The ClockThe clock is a six-digit HH:MM:SS timepiece using only DDL gates (1N4148/1N4007 diodes) for the logic and display functions (the LEDs are also diodes, of course). The power supplies and currently the crystal-oscillator timebase use more traditional...

2:5 Scale KENBAK-1 Personal Computer Reproduction
Details from 2:5 Scale KENBAK-1 Personal Computer Reproduction
Background If you have been following Hackaday for a while, you will have seen on numerous occasions the KENBAK-1, regarded by many as the first commercial personal computer. Ten years ago Mark Wilson introduced KENBAK-uino, a reproduction...

Gesture Sensor Control Using Arduino
Details from Gesture Sensor Control Using Arduino
This sensor module integrates gesture recognition and touch detecting functions in one piece, and provides an adjustable detection range within 0~30cm. When connected to your microcontroller, it can detect 5-way touch signal and 7 kinds of gestures:...

A data indexing exercise
Details from A data indexing exercise
History Back in 2002 I wanted to time-shift radio programs for later listening and also to listen in the car. Since a computer can automatically record at the appropriate times, this was the obvious choice of method. All I had to do was to connect up...

LCD Arduino + STONE HMI + Display Heart Rate
Details from LCD Arduino + STONE HMI + Display Heart Rate
Note: this module by default only with 3.3 V level MCU communications, because it defaults to using IIC pin pull up the resistance of 4.7 K to 1.8 V, so there is no communication with the Arduino by default, if you want to commune with the Arduino and...

LCD Arduino + STONE TFT LCD + Display Heart Rate
Details from LCD Arduino + STONE TFT LCD + Display Heart Rate
LCD Arduino project brief introduction Some time ago, I found a heart rate sensor module MAX30100 in shopping online. This module can collect blood oxygen and heart rate data of users, which is also simple and convenient to use. According to...

Bluetooth Remote Control Intelligent Smart Car
Details from Bluetooth Remote Control Intelligent Smart Car
At the beginning of the new year, robot/Smart Car hobbyists and students (like all of you) about engineering, science and technology are busy with preparing for the robot competitions now. It's the great time to show the world your imagination and potential...

Breadboard VGA from TTL and SRAM
Details from Breadboard VGA from TTL and SRAM
This is a follow-up of my "Breadboard VGA from EEPROM" project that was covered here [hackaday.com] two weeks ago.The video shows the new circuit's first signs of life. It is not really stable yet, but definitely getting somewhere. Halfway the build...

Arise's keyboard
Details from Arise's keyboard
Looking for components in PLCC package. XC9500 is dead and for new project you'd better go to XC9500XL but, since it's for hobby, I'd like to have both if possible.The datasheet reports that new XL are Pin-compatible with 5V-core, e.g. the XC9572 device...

Ublox Neo-7N GPS Module Review
Details from Ublox Neo-7N GPS Module Review
Product SpecificationsGeneralType: GPS ModuleArchitecture: For ArduinoDefault Communication Baud Rate: 9600 bauds (can be modified via software)Output Frequency: 1Hz (can be modified via software)External Antenna Interface: SMACommunication Interface:...

sdramThing4.5 "Logic Analyzer"
Details from sdramThing4.5 "Logic Analyzer"
sdramThing was recently featured on the Hackaday Blog! Thanks Al Williams!SDRAM Logic Analyzer Uses An AVR And A Dirty Trick | HackadayNote that sdramThing4.5 (this project) has pretty much reached an end. The next phase is more of a peripheral--using...