4x3 Keypad is used to allow user to key in decimal number (0-9), * and # keys.
Photos (with iBoard):
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8x IO Port is used to extend the normal IO port to 8x IO with GND pins for the switch input.
usbLink is a USB to Serial Converter which can support UART port (TX/RX), 4x digital IO or 3x 10-bit ADC input.
Pin Header (2.54mm, Straight, 1x40 Way, A:17mm)
128x64 Graphic LCD Display (Blue Backlight) can be used to display up to maximum of 128 x 64 pixels.