Sjaak writes, “It has been a while before I posted something useful. On my search for obscure chips, I came around another interesting Chinese chip (which I don’t reveal yet). The chip was advertised as a cheap drop-in replacement for a American IC so I suspected it would be a clone. I wanted to look […]
Ken Shirriff has a great write-up about the multi-level ROM in Intel’s 8087 floating point chip: The 8087 chip provided fast floating point arithmetic for the original IBM PC and became part of the x86 architecture used today. One unusual feature of the 8087 is it contained a multi-level ROM (Read-Only Memory) that stored two […]
An excellent in-depth look at theTL084 op amp by Ken Shirriff: Some integrated circuits have very interesting dies under a microscope, like the chip below with designs that look kind of like butterflies. These patterns are special JFET input transistors that improved the chip’s performance. This chip is a Texas Instruments TL084 quad op amp and […]
The FT2232H USB 2.0 Hi-Speed breakout board is back in stock at Seeed Studio. This is a breakout with a FT2232H high-speed dual-channel USB-to-serial chip that has two JTAG debug channels. Get one for $27.
Here’s an amazing new DNA testing chip by Panasonic together with the Belgium-based research institution IMEC. It delivers DNA results within an hour: This is the chip we’ve actually developed. As you can see, it’s less than half the size of a business card. It contains everything needed for testing DNA. Once a drop of blood is […]
Sorry, comments are not working on this post for unknown reasons. Please check out our workshop video here.