COMPUTER CONTROLLED SWITCHES SELECT FROM

Brand	Owner	Address	Description
CIRCUITSELECTOR	SOTAS, INC.	910 B Clopper Road Gaithersburg MD 20878	computer-controlled switches to select from among telephone lines and manuals therefor;CIRCUIT SELECTOR;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A semiconductor memory device has column selecting switches in a hierarchical structure. A plurality of local column selecting switches for controlling connections between bit lines and local I/O lines. A global column selecting switch connects column selecting lines and four local column selecting switches when a bit precharging signal becomes low in level for stopping precharging the bit lines. As the column selecting switches are in a hierarchical structure including the global column selecting switch that is directly controlled by the column selecting lines and the local column selecting switches that are controlled by the global column selecting switch, a load on the column selecting lines is reduced for high-speed operation. Even when bit lines are divided into a greater number of bit lines, the number of column selecting switches that are energized by a single column selecting line is not increased, and a signal delay is prevented from occurring.