Photovoltaic Solar Cells

Solar power is the conversion of sunlight into electricity, either directly using photovoltaics, or indirectly using concentrated solar power which uses lenses or mirrors and solar trackers to focus a large area of sunlight into a small beam. All solar cells are made from at least two different materials, often in the form of two […]

Energy Meters

How much power does your modern LCD or plasma TV use when it is on? And how much when it is supposed to be ‘off’? If you want to be economical with energy at home then you need to know how much power each appliance uses. Handy energy meters are available for this purpose that […]

Dye-Sublimation Printers

Inkjet and laser printers dominate the color printer marketplace, but they aren’t the only game in town. Another, less well-known technology called dye sublimation produces high-quality photographic prints from digital images. Most people have never heard of dye sublimation (called dye-sub for short). That’s because early dye-sub printers were very expensive to buy and operate. […]

What is MIDI

MIDI (musical instrument digital interface) is a standardized interface to connect musical instruments (including computers) together and also a protocol – a standard of communication between devices – musical instruments (and computers). MIDI protocol defines messages that describe what notes are to be played and for how long, as well as the tempo, which instruments […]

Turbo Pascal Internals

Pascal is one of programming languages that is not considered as mainstream. However, 25 years ago things were different. The reason for this was Borland which created a now legendary product Turbo Pascal. Turbo Pascal was built on the core of Pascal compiler developed by Anders Hejlsberg. Borland added comfortable editor with simple IDE and […]