Latch - introductio to microprocessors , Electrical Engineering

Latch

A 8 bit  latch comprises of transparent latch D flip  flop. It is commonly  used  to interface output  device with  microprocessor. A typical example of such 8 bit  latch 74LS373 is shown in figure.

The devices  includes  eight  D latches with tri  buffers  only on eis shown in figure for clarity 8 input lines ( ID to 8D)  are connected to data bus and 8  output  lines  to output devices. The  enable signal is connected to clock ( LK). The  enable signal  is actives  high,  when it goes high data are latched from data bus. The  output  control  signal  is active low and  it enables the tri state buffers to output  data to output  devices.

The concept  of interfacing microprocessor with  output  device will be one  more clear after  reading chapter7.

Posted Date: 4/4/2013 1:04:51 AM | Location : United States







Related Discussions:- Latch - introductio to microprocessors , Assignment Help, Ask Question on Latch - introductio to microprocessors , Get Answer, Expert's Help, Latch - introductio to microprocessors Discussions

Write discussion on Latch - introductio to microprocessors
Your posts are moderated
Related Questions

How to Make LPG Safer in the Laboratory The following must be observed in the laboratory: 1. The LPG cylinders should be kept outside the laboratory in a ventilated room.

P-N Junction   A p-n junction is made by joining P-type and N-type semiconductors together in extremely close contact. The word junction consider to the boundary interface

GIS application architecture: GIS application architecture should 1  Give a framework and the essential programming interfaces to enable complex GIS applications to be deve

Q. What do you mean by Time consistent Busy Hour? (i) Busy Hour (ii) Peak Busy Hour (iv) Time consistent Busy Hour  (v) Traffic intensity Ans: (i)  Busy Hour: C

Q. What do you mean by interference? An information-bearing signal often becomes contaminated by externally generated interference and noise and/or by internally generated nois

One byte Instructions One byte  instruction include  both the opcode  operand in the  same byte. To identify  one byte  instruction one  must  observe followings  things .

Define the general purpose embedded system. a. General purpose microprocessor For illustration, Intel 80x86, Motorola 68HCxxx or Sparc b. Embedded general purpose process

Q. Determine the Laplace transform of the waveform shown in Figure.

SPHL Load Stack  pointer with HL Instruction This instruction  copies  the contents of HL register  pair  the stack pointer register. The instruction format is             S