What's new about this Enhanced Willem EPROM Programmer from PCB3B?

1, Added isolation circuit (between VPP and pin). So that to protect this programmer not be damaged by mis-configured VPP jumper.

2, Improved VPP configuration. For this Enhanced Willem EPROM Programmer, VPP can be configured by just press the VPP setting key. No jumper setting is needed. There are 4 LEDs to indicate the VPP currently been selected. (Normal 12V, 15V, 21V, 25V)

3, Improved Special Chip selection. The special chip selection key provides a simple way to select a chip type by pressing the Special Chip key. There are 7 LEDs to indicate the chip type been selected currently.(Normal, 2732, 2716, i28F, AT29, W27C)

4, Added a Safety Jumper and a Reset key to gave more protection when programming. Safety Jumper will disable all VPP and Special Chip changing to avoid misconfiguring accidentally. And Reset key provides a quicker way to reset VPP and Special Chip configuration to normal state.

5, Improved power supply. Added a USB port to make use of USB power. The USB cable is A-A type Male-to-Male connector. No AC adaptor is needed.

6, Added PLCC32, FWH/LPC and P28F002BC adapters on board.

7, The hardware is fully compatible with original Willem EPROM Programmer (PCB3B) and Windows software.