What is a microcontroller pin?

Each output pin reflects the value of some bit in the microcontroller’s memory. When the bit is set to 1, the pin goes to 5 volts, and when the bit is set to 0, the pin goes to 0 volts. A microcontroller can sense the world through its input pins. Input pins are either digital or analog.

How many pins 8051 microcontroller has?

40 pins
8051 microcontroller was designed by Intel in 1981. It is an 8-bit microcontroller. It is built with 40 pins DIP (dual inline package), 4kb of ROM storage and 128 bytes of RAM storage, 2 16-bit timers.

What is 8051 microcontroller used for?

The 8051 Microcontroller is one of the basic type of microcontroller, designed by Intel in 1980’s. This microcontroller was based on Harvard Architecture and developed primarily for use in embedded systems technology.

What is a pins used for?

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 is meant by port in microcontroller hardware?

Ports are represented by registers inside the microcontroller, and allow the program (firmware) to control the state of the pins, or conversely, read the state of the pins if they are configured as inputs. There is a one-to-one correspondence between the pins on the microcontroller and the bits in its registers.

Which of the following is features of 8051 microcontroller?

RAM: 8051 Microcontroller has 128 Bytes of RAM which includes SFRs and Input / Output Port Registers. ROM: 8051 has 4 KB of on-chip ROM (Program Memory). I/O Ports: 8051 has four 8 – bit Input / Output Ports which are bit addressable and bidirectional. Timers / Counters: 8051 has two 16 – bit Timers / Counters.

What is the use of microcontroller?

Microcontrollers are used in automatically controlled products and devices, such as automobile engine control systems, implantable medical devices, remote controls, office machines, appliances, power tools, toys and other embedded systems.

What is the characteristic of pin?

Characteristics of Pin Diode The Diode obeys standard diode equation for all the low-frequency signals. This diode appears like a resistor than any other non- linear devices and is said to produce no distortion or rectification.