Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the operation of 8279. Explain the following terms:
(i) N key Roll over.
(ii) Key board debounce.
(iii) FIFO RAM.
Ans
The 8279 microprocessor is a programmable keyboard and display interfacing component which scans and encodes up to a 64-key keyboard and controls up to a 16-digit numerical display. This keyboard interface has built in first-in first-out buffer which allows this store up to eight keystrokes before the microprocessor should retrieve a character. There display section controls up to 16 numeric displays by an internal 16 X 8 RAM which stores the coded display information.
The keyboard sections contain eight lines which can be connected to eight columns of a keyboard, and also two additional lines with to shift and CNTL/STB keys. These key pressed are automatically debounced and the keyboard can function in two modes two key lock out or n-key rollover. When two keys in the two -key lock out mode are pressed concurrently, only first key is identified. In the N-key roll over mode, concurrent key are recognized and their codes are stored into the internal buffer.
The circuit shown below is a prototype 4 th - order low-pass filter which is required to meet the specification given. However the specification is not met due to inadequate atten
Transmission Through a LiNb0 3 Plate Examine the transmission of an unpolarized He-Ne laser beam (?o= 633 nm) normally incident on a LiNb0 3 plate (ne = 2.29, no = 2.20) of thickn
You should document each step of each iteration of your design. 1. You should include the following items from your preparation. a. A state diagram of the handshaking receive
The present window that is being used.
My question about above topic is"what is the use of the of this process" why we do compensation and space charge carrier
A 300 km, 3-phase, 50Hz transmission line has spacing as shown in Figure. Each phase of the line consists of a bundle of three conductors. (a) Find the total per-phase inductanc
Formulars.
You are expected to do the experimentation on digital electronics and realize the result...
aliasing with message spectrum and two frequency shifted replica and remedies to combat aliasing
Q. A single-phase industrial plant consists of two loads in parallel: P1 = 48kW PF1 = 0.60 lagging P2 = 24kW PF2 = 0.96 leading It is operated from a 500-V, 60-Hz source.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd