Make noise with a PIC : 08/07/03 EDN-Design
Ideas / Building a stable noise generator for
audio-frequency purposes requires only a few
components. The circuit in Figure 1 relies on
linear-feedback shift registers and some simple
software. An eight-pin Microchip (www.microchip.com)
PIC12C508 controller (IC2) with a short program
generates pseudorandom noise at its output pin,
GP0....
Memory Game: MeGaM is based upon the early 80s
"simple-Simon" game. The opponent (microcontroller)
slowly builds up a random LED sequence, which the
player has to repeat step-by-step by pressing the
corresponding push buttons.
Power Supply Cuts Switching Noise In DDR Memory
Systems : 11/11/02 Electronic Design - Ideas for
Design / This design idea describes a unique,
low-cost power-supply circuit for a double-data-rate
(DDR) memory system. Conventional designs for DDR
memories consist of a dual buck converter and a
voltage reference. In contrast, this design replaces
one buck...
Single IC forms pseudorandom noise source:
03/21/2002 EDN - Design Ideas / Trying to find a
single IC noise source can be frustrating. National
Semiconductor once made such a noise source for
audio applications, but it's now hard to find. This
situation leaves the designer with several choices,
most of which involve using several ICs. You can
take the analog approach of using a lot of gain to
amplify diode-avalanche noise, or you can design a
linear-feedback-shi... .