What are pins in microprocessor?

What are pins in microprocessor?

The pins on a CPU chip are used as input and outputs to the CPU. Each pin signals a specific data, function or operation. Every signal pin has a signal name, e.g., MREQ (memory request), READ, etc.

What are the interview questions of microprocessor?

Part 1 –Microprocessor Interview Questions (Basic)

  • What Is a Microprocessor?
  • What Are the Flags In 8086?
  • Why Crystal Is Preferred for A Clock Source?
  • What is the program Counter?
  • What Is the 1st, 2nd, 3rd, 4th Generation Processor?
  • What Is Tri-State Logic?

What is Sid and sod in 8085?

There are 2 serial signals, i.e. SID and SOD and these signals are used for serial communication. SOD (Serial output data line) − The output SOD is set/reset as specified by the SIM instruction. SID (Serial input data line) − The data on this line is loaded into accumulator whenever a RIM instruction is executed.

Which flag is present in 8085 microprocessor?

8085 has five flags. Sign flag, zero flag, Auxiliary carry flag, Parity flag and Carry flag.

What are pins of 8085 microprocessor?

Pin diagram of 8085 microprocessor

IO/M’ S1 Data Bus Status
1 1 I/O read
1 0 I/O write
1 1 Interrupt acknowledge
0 0 Halt

What is the function of pin?

A pin is a device used for fastening objects or material together and can have three sorts of body: a shaft of a rigid inflexible material meant to be inserted in a slot, groove, or hole (as with pivots, hinges, and jigs); a shaft connected to a head and ending in a sharp tip meant to pierce one or more pieces of soft …

What are different addressing modes in 8085?

An 8085 microprocessor uses five addressing modes: Immediate addressing mode, Register addressing mode, Register indirect addressing mode, Direct addressing mode, and Implicit addressing mode.

Is 8085 serial or parallel?

Our device, the Intel 8085 Microprocessor, is a parallel device. Thus, it transfers 8 bits of information simultaneously over 8 data lines in the parallel I/O mode.

What are the flags of 8085?

Flags register in 8085 Microprocessor

  • Carry flag (Cy),
  • Auxiliary carry flag (AC),
  • Sign flag (S),
  • Parity flag (P), and.
  • Zero flag (Z).

Which is not flag in 8085?

However, in our 8085 instruction set does not provide any instruction, which explicitly uses the AC flag. Sign flag (S): The S flag is set to 1, when the result thus produced against any logical or arithmetic operations is negative, indicated by MS bit of 8-bit result being 1.

How many interrupts are there in 8085?

Interrupts in 8085. Interrupts are the signals generated by the external devices to request the microprocessor to perform a task. There are 5 interrupt signals, i.e. TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. Vector interrupt − In this type of interrupt, the interrupt address is known to the processor.

What is pin configuration?

Configuration pins are used to load the design data into SRAM-based FPGAs. The bitstream defines the functional operation of the internal resources, interconnections and I/O for the FPGA. The configuration mode selected to program the FPGA is an important design factor to consider when assigning pins.

What are different types of pins called?

8 Different Types of Pins

  • Linch Pins. Linch pins have their own built-in locking mechanism in the form of a loop that runs through the head of the pin.
  • Cotter Pins.
  • Hair Pins.
  • Clevis Pins.
  • Wire Lock Pins.
  • Hitch Pins.
  • Spring Pins.
  • Dowels.

What is the classification of pins?

Industrial pins can be categorized in order to his function and forms into several categories, such as: dowel pins, spring pins, cotter pins and wire clips, hitch and lynch pins or special pins. Dowel pins are industrial fasteners that are used to join two or more items together.

What is the use of 8085 microprocessor?

8085 is pronounced as “eighty-eighty-five” microprocessor. It is an 8-bit microprocessor designed by Intel in 1977 using NMOS technology. It is used in washing machines, microwave ovens, mobile phones, etc.

What is basic unit of microprocessor?

Microprocessor consists of an ALU, register array, and a control unit. ALU performs arithmetical and logical operations on the data received from the memory or an input device. Register array consists of registers identified by letters like B, C, D, E, H, L and accumulator.

Why interrupts are used in 8085?

Which state is used in 8085 microprocessor?

One time period of frequency of microprocessor is called t-state. A t-state is measured from the falling edge of one clock pulse to the falling edge of the next clock pulse. Fetch cycle takes four t-states and execution cycle takes three t-states.

What are the common microprocessor interview questions asked in an interview?

Answer: These are the common Microprocessor Interview Questions asked in an interview. In 8086, carry flag, parity flag, auxiliary carry flag, zero flags, an overflow flag, trace flag, interrupt flag, direction flag, and sign flag are present. 3. Why Crystal Is Preferred for A Clock Source?

What are the 16 bit registers in 8085?

In 8085 name the 16 bit registers? – Stack pointer and Program counter all have 16 bits. 3. What are the various flags used in 8085? – Sign flag, Zero flag, Auxillary flag, Parity flag, Carry flag. 4. What is Stack Pointer? – Stack pointer is a special purpose 16-bit register in the Microprocessor, which holds the address of the top of the stack.

What are the flags in 8086 microprocessor?

What Are the Flags In 8086? Answer: These are the common Microprocessor Interview Questions asked in an interview. In 8086, carry flag, parity flag, auxiliary carry flag, zero flags, an overflow flag, trace flag, interrupt flag, direction flag, and sign flag are present. 3. Why Crystal Is Preferred for A Clock Source?

How many interrupt signals are there in 8085 microprocessor?

The 8085 has five interrupt signals that can be used to interrupt a program execution. The microprocessor acknowledges Interrupt Request by INTA’ signal. In addition to Interrupts, there are three externally initiated signals namely RESET, HOLD and READY.