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The first integrated circuit was created in 1958 by American electrical engineer Jack Kilby (1923-2005). Before Kilby’s Invention, machines used vacuum tubes, which were bulky and unreliable. Kilby’s IC was based on tiny transistors, and all the parts were made on the one piece of material: the integrated chip was born.…

The D-wave quantum supercomputer has the same processing power as 100 million regular computers.
If 100 million computer chips were stacked on top of each other, they would be the same height as 23 Mount Everests.

Colossus, built in 1943, was a computer that had a fixed function: to break coded messages. The same was true of the ENIAC (Electronic Numerical Integrator And Computer), developed around the same time.
Changing the program of either of these computers involved rewiring the machine and physically pulling switches.…

Trying the Numato Lab Waxwing Spartan 6 development board.

Waxwing Spartan6 Development Board is a low-cost FPGA development board with a lot of features including DDR SDRAM, 100M Ethernet, AC97 codec, and DVI-D. Waxwing Development Board features Waxwing Xilinx Spartan-6 FPGA Mini Module with high-density connectors for external IO interface.…

Building a HB9CV for the 2 Meters Band.

My favourite soldering station. I build and fix my circuits using the Weller WXR3.


Building my home-made HB9CV antenna.

The HB9CV antenna was developed by the Swiss radio amateur Rudolf Baumgartner HB9CV in the 1950s.

The HB9CV allows for reasonable gain, a good front / rear gain ratio, and most of all: reasonable dimensions . It…

Programing and testing an LCD using the Microcontroller.…

I’m building this HF SDR transceiver. The transceiver uses an Atmel Atmega Micro-controller. The project progress will be updated when I have some free time.