Which device is a bi-stable memory element used to store information?

Which device is a bi-stable memory element used to store information?

• A. Data-type Latch
• B. Flip-flop
• C. Truth Table
• D. Clock Pulse

Answer: (B)

Storing information requires a device that has two stable states and can hold one of them until deliberately changed. The flip-flop fits this role: it is an edge-triggered bistable memory element that stores a bit (0 or 1) and only changes state on a clock edge or a controlled input, making it reliable for synchronous storage in registers, counters, and memory circuits. A latch can also store information, but it is level-sensitive and can change state when the enable is active, which isn’t as predictable for timed, synchronized operations. A truth table describes how inputs map to outputs, not a storage device. A clock pulse is a timing signal, not a memory element.

Storing information requires a device that has two stable states and can hold one of them until deliberately changed. The flip-flop fits this role: it is an edge-triggered bistable memory element that stores a bit (0 or 1) and only changes state on a clock edge or a controlled input, making it reliable for synchronous storage in registers, counters, and memory circuits. A latch can also store information, but it is level-sensitive and can change state when the enable is active, which isn’t as predictable for timed, synchronized operations. A truth table describes how inputs map to outputs, not a storage device. A clock pulse is a timing signal, not a memory element.