Microprocessor Architecture Quiz

<p>Software provides instructions, while hardware executes them. (B)</p> Signup and view all the answers

<p>Uses English-like words, making it easier to understand than machine code. (A)</p> Signup and view all the answers

<p>To simplify programming by using English-like statements. (D)</p> Signup and view all the answers

<p>Low-level languages are machine-dependent, while high-level languages are machine-independent. (C)</p> Signup and view all the answers

<p>Independently executed by each instruction. (D)</p> Signup and view all the answers

<p>To hold the address of the next instruction to be executed. (B)</p> Signup and view all the answers

<p>It indicates a DMA controller's request to use the bus. (A)</p> Signup and view all the answers

<p>Stack Pointer (SP) and Program Counter (PC) (A)</p> Signup and view all the answers

<p>Generating timing signals and controlling the execution of instructions. (A)</p> Signup and view all the answers

<p>To store the address of the top of the stack. (B)</p> Signup and view all the answers

<p>It holds the status of the microprocessor during execution. (C)</p> Signup and view all the answers

<p>To signal the CPU to relinquish control of the system bus. (C)</p> Signup and view all the answers

<p>To provide a unified representation of the processor's state. (C)</p> Signup and view all the answers

<p>8-bit data size and 16-bit address size (A)</p> Signup and view all the answers

<p>It has separate pins for address and data. (C)</p> Signup and view all the answers

<p>3.0 MHz (B)</p> Signup and view all the answers

<p>64k (D)</p> Signup and view all the answers

<p>Alternate registers available for each primary register. (B)</p> Signup and view all the answers

<p>8085 multiplexes its lines to save space. (A)</p> Signup and view all the answers

<p>NMOS technology (D)</p> Signup and view all the answers

<p>Built-in logic to refresh dynamic RAM memories (C)</p> Signup and view all the answers

<p>To enable the external latch for demultiplexing (B)</p> Signup and view all the answers

<p>Multiplexed data and low order address bus (D)</p> Signup and view all the answers

<p>64Kb (A)</p> Signup and view all the answers

<p>Directly interface with peripheral devices (C)</p> Signup and view all the answers

<p>Converts external commands into control signals (D)</p> Signup and view all the answers

<p>8-bit words (D)</p> Signup and view all the answers

<p>It sequences the execution of instructions. (D)</p> Signup and view all the answers

<p>Arithmetic and Logic Unit (ALU) (D)</p> Signup and view all the answers

<p>To accept serial data into the microprocessor (D)</p> Signup and view all the answers

<p>To indicate memory operations when low (D)</p> Signup and view all the answers

<p>Resets the program counter to zero (A)</p> Signup and view all the answers

<p>Hardware interrupts with the highest priority (A)</p> Signup and view all the answers

<p>12 interrupts (C)</p> Signup and view all the answers

<p>Resets all peripheral devices connected to the microprocessor (D)</p> Signup and view all the answers

<p>TRAP (A)</p> Signup and view all the answers

<p>Information regarding signal statuses during machine cycles (D)</p> Signup and view all the answers

<p>The time required to complete one operation of accessing memory, I/O, or acknowledging an external request. (D)</p> Signup and view all the answers

<p>4 (C)</p> Signup and view all the answers

<p>To signal the microprocessor that a peripheral device is ready to transfer data. (A)</p> Signup and view all the answers

<p>7 (B)</p> Signup and view all the answers

<p>To enable the microprocessor to read and write data from and to memory chips. (B)</p> Signup and view all the answers

<p>Their contents are held constant. (A)</p> Signup and view all the answers

<p>A machine cycle is a subset of an instruction cycle. (A)</p> Signup and view all the answers

<p>Memory Read (C)</p> Signup and view all the answers

A multipurpose, programmable logic device that processes binary instructions from memory.

The basic units are ALU, an array of registers, and Control unit.

Used in general and special purpose applications like PCs, instrumentation, and control systems.

Physical components of a computer system.

A set of instructions or programs for performing specific tasks.

A low-level programming language using English-like words, specific to microprocessors.

Programming language that uses binary (0s and 1s), understood by microprocessors.

Programming languages like BASIC, C, and Java that are machine-independent.

A signal used to demultiplex address and data lines using an external latch.

The data and low order address bus are multiplexed; demultiplexing happens in the first T cycle of ALE's falling edge.

8085 microprocessor has an 8-bit data bus for data transfer.

The 8085 microprocessor has a 16-bit address bus, allowing access to memory.

The microprocessor controls all system activities, issuing signals, and executing instructions.

It controls data flow within the processor, converting instructions into control signals.

Store data, perform arithmetic/logic operations, test conditions, and sequence instruction execution.

Carries out arithmetic and logical operations on 8-bit words, using accumulator inputs.

A pair of registers in a microprocessor used for data storage and manipulation.

Serial Input Data line for accepting serial data in microprocessors.

Serial Output Data line for sending serial data from microprocessor.

Part of the instruction that specifies the operation to perform in a microprocessor.

Status signal in 8085 used to differentiate between memory and I/O operations.

Signal that resets the microprocessor by setting the program counter to zero.

External interrupts triggered by hardware, such as TRAP and INTR, to signal the CPU.

The highest priority interrupt in the 8085 microprocessor system.

A register that points to the next instruction's memory address.

A 16-bit register that holds the address of the stack's top.

Generates timing signals to synchronize microprocessor operations.

A 16-bit word that combines flag register and accumulator contents.

Indicates a peripheral requesting control of buses.

Registers like SP and PC used in the 8085 microprocessor.

Signals from the timing control section to manage operations.

Allowed combinations of registers in the 8085 microprocessor.

The sequence of operations carried out by a processor to execute an instruction.

The time required to complete one operation like accessing memory or I/O.

A subdivision of operations performed during one clock period, equal to one clock cycle.

STA 1800h requires 4 Machine Cycles and 13 T-States for execution.

MVI instruction requires 7 T-States to complete fetching and moving data.

Used during slow peripheral devices' data transfer; microprocessor waits if READY line is low.

Connecting a microprocessor to memory allowing it to read and write data.

Using READY line for data transfer between slow devices and microprocessor during execution.

An 8-bit microprocessor with 16-bit address size, capable of accessing 64k memory.

An 8-bit microprocessor with a 16-bit address size, can access 64k memory.

8085 multiplexes low order address and data lines; Z80 has separate lines.

8085 has a maximum clock frequency of 3 MHz; Z80 has 2.5 MHz.

Both are based on NMOS technology, have 40 pins, and 16-bit memory access.

Alternate set of registers in Z80, allowing for quick context switching.

Includes more registers, extra addressing modes, larger instruction set, and has RAM refresh logic.

8085 uses one signal (IO/^M) to identify I/O; Z80 uses separate signals.