A typical microcomputer may address up to 65,536 locations in memory. Each individual addressable unit in this address space is usually called a memory location (i.e., one addressable register/cell in RAM/ROM).

Introduction / Context:
When we say a system has, for example, 64K of memory, we mean it can address 65,536 discrete units. Understanding the terminology for each unit avoids confusion between physical chips, CPU internal registers, and the abstract addressing model used by programs.

Given Data / Assumptions:

• The microcomputer has an address space with 65,536 addresses.
• Each address selects one storage unit (typically one byte).
• We need the term for that unit.

Concept / Approach:
A memory location is a single addressable storage cell in main memory. The word “address” is the label used to reference a memory location, not the location itself. “Register” usually refers to a CPU-internal fast storage element, not a cell in main memory. “Chip” is a physical device containing many locations.

Step-by-Step Solution:
Distinguish address (label) from the storage unit (location).Exclude CPU registers and physical chip terminology.Select the precise term for a single addressable unit: memory location.

Verification / Alternative check:
Programming languages and debuggers display memory as pairs of address:value, reinforcing that the stored cell is the memory location, while the hex code is the address used to access it.

Why Other Options Are Wrong:
Address: a reference label, not the storage entity. Registers: CPU internal, not main memory cells. Chip: hardware package, not a single cell. “None” is incorrect since “memory location” is standard.

Common Pitfalls:
Calling a memory cell a “register,” which can mislead when discussing CPU pipelines or register files; mixing logical addressing with physical packaging.

Final Answer:
memory location