Internal computer registers that store data are often connected to the computer data bus lines by:
A) totem- pole output devices.
B) quad input AND gates.
C) open- collector devices.
D) tri- state buffers.

Question

Quizplus · Accepted Answer

Tri-state buffers are used to connect internal computer registers to the data bus lines because they can be in one of three states: 0, 1, or high impedance (Z). The high impedance state effectively disconnects the register from the bus, allowing multiple devices to share the same bus without interfering with each other when they are not actively driving the bus.

Internal Computer Registers That Store Data Are Often Connected to the Computer