TL:DR; A program to decode Morse code via sound input of PDA to text.
A program to decode Morse code via sound input of PDA to text. No additional hardware required - your need only receiver and PDA with sound input. Built-in microphone of device can be used also.
Quick Timer R4X is high resolution programmable timer. It controls 4-channel relay controller boards of National Control Devices. It's fit for lights control, science experiment, home automation, industry control, energy conservation and so on.
A simulation of a NYC Transit Authority train traveling by automatic signals with working stop arms. Working circuit drawings show how the signal system relays function while the train passes over track circuits.
LignUp Stamps Multi Collector was developed to make the collections on your computer organized and automated. The full-fledged database has all necessary functions to keep your stamps in order and view them right through the program.