SOFTTRONICS Keyboards Pvt. Ltd. Hadapsar, Pune, Maharashtra

These keyboards are available in a wide range of standard matrix to meet the small quantity and urgent need of development jobs or customised jobs. The keyboards are very popular in the collages as the student need it for their projects. The keyboards are available with insertion facility so that any customised legend can be defined as per the user choice.

PCF based keyboards , consists of two or more layers of polyester film, screen printed with the electrically conductive circuit. These two layers are isolated with a spacer which has air vents for Perfect operation of the switch.

The difference between tactile & non-tactile membrane keyboard is that non-tactile rely on a sensory touch than tactile touch, such as audio or visual stimuli that alerts the user to switch the keyboard off. Non-tactile keyboard are used in tough environment and are more conductive in applications where large, hidden or irregular shaped keys are requirements. The diagram shown aside gives a clear view of a typical non- tactile membrane keyboard.

Illuminated keyboards rely on backlighting to give keys greater visibility under low-light conditions, eliminating the need to use task lighting that can add glare.

Keyboards use a variety of switch technologies. Capacitive switches are considered to be non-mechanical because they do not physically complete a circuit like most other keyboard technologies. Instead, current constantly flows through all parts of the key matrix. Each key is spring-loaded and has a tiny plate attached to the bottom of it.