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#55단계의 변경 사항

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편집 승인됨 완료자 jrw01

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단계 라인

[* black] Chips on the back of the board:
[* red] STMicroelectronics 324 E9SU518 - Possibly an LM324 Quad Op Amp?
[* orange] STMicroelectronics 339 E9W2513 - Possibly an LM339 Quad Comparator?
[* yellow] Unidentified Texas Instruments chip with the part number sanded off.
[* green] [http://datasheet.octopart.com/UPA2714GR-E2-A-NEC-datasheet-39589.pdf|A2714 Power MOSFET]
[* light_blue] Large QFP chip with the part number sanded off and a red and a blue mark on top.
[* black] Interestingly, all the chips were covered in a hard, clear coating that made it hard to read the part numbers.
[* black] It appears that whoever designed this board was trying to prevent reverse engineering by making it hard to read the part numbers on the chips.

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