Quick Answer: Why Latch Is Used For Output Port?

What is difference between latch and buffer?

A latch is a digital IC which holds the data put into it, 1 or 0, until cleared.

A buffer is either analog or digital, and it increases the power of the input signal without changing the value..

What is latch register?

In simple words, latch is a circuit that can hold 1 bit of data and is asynchronous (i.e. without a clock). Registers are combination of flipflops( which are the same as latch but have a clock pulse to trigger). Registers can hold 2^n data(n bit of data) if it consists of n number of flipflops.

What type of circuit is used at the interface point of an input port?

Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews….Discussion Forum.Que.What type of circuit is used at the interface point of an input port?c.tristate bufferd.none of the aboveAnswer:tristate buffer2 more rows

What is backplane in LCD?

The configuration for Liquid Crystal Display Static Drive technique is that one side of all of the Liquid Crystal Display segments are tied to a common, or backplane, and the other side of each of the segments are routed to individual connection points that are tied to the driver control circuitry.

Is generally used to increase the apparent size of physical memory?

13. ______ is generally used to increase the apparent size of physical memory. Explanation: Virtual memory is like an extension to the existing memory. Explanation: This is a system command enabled when a memory function is completed by a process.

What is Interface Circuit Mcq?

This set of Computer Organization and Architecture Multiple Choice Questions & Answers (MCQs) focuses on “Interface Circuits”. … Explanation: The interface circuits act as a hardware interface between the device and the software side.

What is the interface circuit *?

An interface circuit is a signal conditioning circuit used to bring signal from the sensor up to the format that is compatible with the load device.

What is the difference between Tris and port register?

I’ll say quickly that TRIS register serves to set to “direction” of a PORT and its Pins (input or output), while PORT register lets you read the Pins’ state when used as inputsor outputs. There is also LAT register, which lets you drive the outputs correctly.

What is Port latch?

The latch is the output latch onto which values are written. The port is the voltage at the actual pin. There are a few situations where they can be different. The one that I’ve encountered most frequently is if you have a pin (accidentally) shorted to ground.

Can an input port and an output port have the same port address in 8085?

Yes. It is true that both input port and output port can have the same address in a peripheral mapped I/O. … The 8085 register differentiates between the input and output ports of the same address by the control signal. The input port requires the RD and the output port requires the WR signal.

Why number of output ports in I O mapped I O is restricted to 256 specify the 8085 signals that are used to enable an input and output port?

The number of output ports in the peripheral I/O is restricted to 256 ports because the operand of the OUT instruction is 8-bits; it can have only 256 combinations 2. … In The 8085 differentiates between the input and output ports of the same address by the control signal.