Microprocessor vs Microcontroller Quiz

An 8-bit internal register in the microprocessor used for temporary storage of data.

An 8-bit parallel central processing unit (CPU).

Software used to drive microprocessor-based systems.

An 8080/8085 assembly language instruction that loads the input port's contents into the accumulator.

An 8080/8085 assembly language instruction that stores the accumulator's contents into an output port.

An 8-bit internal bus that connects the accumulator and other general-purpose registers.

Part of the CPU that performs arithmetic and logic operations.

An abbreviation of an operation in assembly language.

The LDA instruction loads the contents of an input port into the accumulator register.

The WR (Write) line signals the microprocessor to write data to the memory or I/O device.

The address latch stores the address of the memory location or I/O port being accessed, ensuring the correct data is transferred.

The CE (Chip Enable) signal controls the flow of data to and from the memory chip or I/O device. A low CE bar signals the chip to accept or transfer data.

The RD (Read) line signals the microprocessor to read data from the memory or I/O device.

The data bus is a set of lines used to transfer data between the microprocessor and memory or I/O devices.

The STA instruction stores the contents of the accumulator register into an output port.

Memory-mapped I/O treats input/output devices as memory locations, allowing the use of the same instructions for both.

The first byte of an instruction that tells the microprocessor what operation to perform. It's like a command to the microprocessor.

The data value used by the instruction. It's the information that the instruction works with.

The number of bytes an instruction occupies. Instructions can be 1, 2, or 3 bytes long.

A Load Accumulator Direct (LDA) instruction that loads the value 09H into register A.

A 1-byte instruction that decrements the value stored in register A by 1.

A jump instruction that transfers program control to a specific address if the Zero flag is set (if the result of a previous operation was zero).

A jump instruction that transfers program control to a specific address unconditionally.

LDA loads data from memory into the accumulator, while STA stores data from the accumulator into memory.

A port that allows data to be loaded into the accumulator from an external device.

A port that allows data from the accumulator to be sent to an external device.

An IC that allows one data source to be connected to multiple destinations. However, with a buffer, the output doesn't have proper control and can float.

An IC that stores data and only allows the data to pass through when a clock signal is present, providing controlled output.

An assembly language instruction that moves immediate data into a specified register.

An assembly language instruction that decrements the value in a specified register by 1.

A unique, 1-byte code language that each microprocessor uses to understand instructions.

The brain of a computer system, often called a microprocessor, responsible for processing data and executing instructions.

Computer program statements that provide instructions step-by-step to solve a problem.

A software program that converts high-level language codes into machine language that can be executed by the computer.

A diagram used by programmers to visualize program logic, showing looping and conditional branching.

A group of conductors that sends control functions throughout a computer system.

A method of addressing I/O devices as if they were memory locations, using the same instructions for both I/O and memory access.

A method where I/O devices have their own dedicated addresses, separate from memory addresses, using specific instructions for I/O operations.

The IO/M (Input/Output or Memory) line is LOW for memory-mapped I/O, indicating that the microprocessor is accessing a memory location. It's a signal that tells the system, 'Hey, we are accessing memory!'

The IO/M line is HIGH for I/O-mapped I/O, signifying that the microprocessor is communicating with an I/O device.