Hewlett-packard Development Company, L.p.

Compaq Computer Corporation, Inc.

James A Windsor

Charles N Shaver

Francis A Felcman

Roy E Thoma, Iii

Mustafa A Hamid

James P Paschal

Joseph A Clegg

A voltage regulation steering circuit reads a voltage input code from a device and detects a set of predetermined conditions for gradually counting an output voltage code. Depending upon the set of predetermined conditions, the steering circuit either gradually counts the output voltage code from a predetermined initial voltage code to the voltage input code or gradually counts the output voltage code from the voltage input code to a predetermined low voltage code. As the steering circuit gradually counts from the predetermined initial voltage code, the steering circuit compares the output voltage code to voltage input code until the output voltage code matches the voltage input code. As the steering circuit gradually counts from the voltage input code, the steering circuit compares the output voltage code to the predetermined low voltage code until the voltage output code matches the predetermined low voltage code. The output voltage code is provided from the steering circuit to a voltage controller.

Steering circuit and method that gradually counts a voltage output code until matching a voltage input code

A memory expansion board capable of holding up to 16 Mbytes of memory devices, using primarily 1 Mbit chips, in 2 Mbyte module increments, on a single IBM PC/AT compatible size board. The circuit board is so designed that when the memory expansion board is populated by modules and placed in a computer system it does not interfere with any of the other expansion slots within the computer system, all of the expansion slots being normally spaced apart. The memory expansion board also includes a means of protecting the memory expansion board and modules from damage due to misalignment when inserting the board and/or modules. When certain of the modules are inserted rotated 180 degrees the circuit board cannot be properly installed in the system board because of physical interference. Lastly, the memory expansion board includes a means for providing reduced length addressing memory lines to memory devices appearing on opposite sides of a circuit board.

Modular computer memory circuit board

Growing community of inventors

Tomball, TX, United States of America

James A Windsor