The DISPLAY VISIONS EA KIT series — in continuous production since 1996 — combines an integrated graphical LCD with touch panel and programmable I/O into a single compact control unit that replaces separate display, keypad, and I/O modules in small embedded systems. The pressure-sensitive resistive touchscreen works with a finger, stylus, pencil, or gloved hand, making it practical for industrial and laboratory environments.

How does the macro system reduce host controller workload?

KIT series units execute macros autonomously without continuous serial communication from the host. Three trigger types are supported: touch macros fire when the user presses a defined area of the screen; port macros execute when external digital inputs change state; and analogue macros trigger when an input voltage crosses a configurable threshold. Macros can be chained — a touch event can initiate a sequence of screen changes, I/O toggles, and data transmissions — offloading entire operator interaction workflows from the main system controller. The free LCD-Tools Windows software simulates the complete display and macro behavior on a PC before downloading to the hardware, enabling offline development without tying up the physical unit.

What graphics capabilities does the built-in command set provide?

Rather than requiring a complex GUI framework or driver library, KIT series units accept high-level-language-style graphic commands over the serial port: draw lines, boxes, and automatically scaled bar graphs; position any of 16 built-in fonts with pixel-accurate 8× zoom scaling in both horizontal and vertical axes; and display stored bitmaps, company logos, or help text from internal FLASH/EEPROM. This minimalist command interface allows even low-resource microcontrollers to drive sophisticated graphical user interfaces without a local frame buffer.