Image: Die of the first 555 chip
Die_of_the_first_555_chip.jpg (379 × 346 pixels, file size: 50 KB, MIME type: image/jpeg)
Description: Die shot of the first 555 timer IC manufactured in 1971.
Title: Die of the first 555 chip
Credit: Carmenzind, Hans (2010). "タイマIC 555 誕生秘話". トランジスタ技術 (Transistor Technology) 47 (12): 74. CQ出版 (CQ Publishing Co., Ltd.. ISSN 0040-9413.
Author: CQ出版社 (CQ Publishing Co., Ltd.)
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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