DVI-D - DVI Digital (True Digital) DVI-D is a direct digital connection between your video card and your monitor. This type of connection provides a fast transfer rate, high quality image and no quality loss due to the fact that all signals from PC's are purely digital; no digital-analog-digital conversion is needed.
Typical costs: 1  A half-size keyboard with training software averages $200-$250. Expect to pay $550-$2,000 or more for a full (88 keys) digital piano keyboard with touch-sensitive keys and a damper pedal. 2  Beat-up traditional pianos are often available for $250-$500.
A normal computer keyboard is composed of around 110 keys. Although on the basis of key arrangements there are four major keyboard layouts being used worldwide, QWERTY, AZERTY, QWERTZ and HCESAR, but they can be classified in many more different categories depending on types of computer connector, size, number of keys etc.