In digital electronics, which statement about a parallel register is correct, considering storage capacity and typical construction?

Introduction / Context:
Registers are fundamental storage elements inside CPUs and digital systems. Understanding how a parallel register works clarifies concepts like word width, data paths, and synchronous design. The question asks you to identify the accurate property of a parallel register.

Given Data / Assumptions:

• A register is a small, fast storage built from flip-flops.
• “Parallel” implies all bits of a word are stored and (often) loaded together.
• Reading a register is typically non-destructive.

Concept / Approach:
A parallel register contains one flip-flop per bit of the word (e.g., 8, 16, 32). On a load event, all flip-flops capture their respective input bits simultaneously. The register retains its value until overwritten or cleared; reading the outputs does not erase the contents (unlike destructive readout memories of older technologies).

Step-by-Step Solution:
1) Match “parallel” to simultaneous multi-bit storage and loading. 2) Recall that flip-flops are the canonical building blocks of registers. 3) Confirm that reading a register is typically non-destructive. 4) Select the statement that affirms multi-bit storage.

Verification / Alternative check:
Textbooks depict N-bit registers as N flip-flops with common clock and control lines (load/clear), verifying multi-bit simultaneous storage.

Why Other Options Are Wrong:
Erased after read: false for modern registers. Cannot be built from flip-flops: false—flip-flops are standard construction. Stores only a single bit: that describes a single flip-flop, not a register.

Common Pitfalls:
Confusing shift registers (serial movement) with parallel registers; both use flip-flops, but parallel registers emphasize simultaneous word-wide operations.

Final Answer:
It can store a multi-bit binary number simultaneously