The silly mistakes are happening ...

Resistor
The Shopkeeper gave 22kohm instead of 2.2kohm, and I also did not check that day. So today when I gather components for 8255 TBU, I just discovered it. So next Wednesday I guess I have to go to SS2 again. Yet another, the 100ohm and 100kohm I supposed to buy the array type to reduce wiring, but then he gave the discrete type. What a waste of time.

8255 Tester Board Upgrade (TBU)
The schematic drawing as well as components layout diagram have been completed. However since, the 2.2kohm resistor is not available yet, so Mr Khow cannot complete the fabrication of the board by Wednesday. The rest of other components are already gathered and keep in the store.

USB Port Tester Board Fabrication
The layout and and schematic diagram to fabricate the board already completed. However, the usage of array resistor and 2.2k ohm are required for better design. Need to go to SS2 again to get the parts.

8255 Automatic Egg Rolls Machine Test
The I/O cards are OK as well as the software and hardware. However, one stupid thing is not there. Some idiot had cut the pneumatic tube that used to supply the compressed air from air compressor to the machine. Since the replacement tube is not available for the time being, so the full test cannot be carried out. What a waste of time and effort for today, and what a stupid idiot dare to do such thing to the machine.