Showing papers on "Bus network published in 1969"

Interconnection bus system

Abstract: In an interconnection bus system, a first impedance network connects at one end of the bus in parallel with a termination provided by a master unit. The termination includes a load impedance for terminating the bus in its characteristic impedance in series with a voltage source for supplying power to the control circuits of a series of devices tapped at different points along the length of the bus. The last device in the series connects to the other end of the bus and includes a second impedance network, complementary to the first, which terminates the bus to ground.

Flip-flop display and manual control for bus organized computer

Abstract: In a computer a plurality of flip-flops are connected to a common source bus and to a common destination bus. A combined display and manual control circuit is connected to the source bus and the destination bus in such a manner that the state of one of the flip-flops can be displayed and manually controlled as selected by an addressing means. In particular, means are provided for displaying a selected flip-flop and maintaining the state of that flip-flop, with logical provisions for manually over-riding the existing state and either setting or clearing the selected flip-flop, all with only a pair of leads between the combined circuit and the matrix of flip-flops.