Pacific Gas and Electric Logo

Pacific Gas and Electric Logo

The complex circuitry of a Motorola 68HC05PG microcontroller contains a small logo containing lightning bolts and a small silicon building that probably represents the Pacific Gas and Electric company. The chip housing the logo is known as a cuda integrated circuit, and was recovered from an Apple motherboard and uncapped by Antoine Bercovici in Paris. Cudas are microcontrollers that serve as the managing circuitry for the Apple Desktop Bus and the computer real-time clock. The chip supervises system power and maintains the parameter random access memory (also referred to as the PRAM), as well as managing and maintaining information regarding all system resets from various commands (for example, keyboard restart, loss of power, and software restart). Also Nested within the circuitry is a silicon stork carrying a new baby.


© 1995-2022 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Wednesday, Mar 03, 2004 at 04:30 PM
Access Count Since April 1, 2003: 25787