1
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
What memory address range is NOT represented by chip 1 and chip 2 in
figure? A0 to A15 in this figure are the address lines and CS means Chip Select.
2
GATE ECE 2004
MCQ (Single Correct Answer)
+2
-0.6
The 8255 Programmable Peripheral Interface is used as described below.
I. An A/D converter is interfaced to a microprocessor through an 8255. the conversion is initiated by a signal from the 8255 on Port C. A signal on Port C causes data to be strobed into Port A.
II. Two computers exchange data using a pair of 8255s. Port A works as a bidirectional data port supported by appropriate handshaking signals.
The appropriate modes of operation of the 8255 for I and II would be3
GATE ECE 2001
MCQ (Single Correct Answer)
+2
-0.6
An 8085 microprocessor based system uses a 4K × 8-bit RAM whose starting
address is AA00H. The address of the last byte in this RAM is
GATE ECE Subjects
Browse all chapters by subject
Network Theory
Control Systems
Electronic Devices and VLSI
Analog Circuits
Digital Circuits
Microprocessors
Signals and Systems
Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Fourier Transform Representation of Continuous Time Signal Fourier Series Transmission of Signal Through Continuous Time LTI Systems Miscellaneous Sampling Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Discrete Time Signal Z Transform Transmission of Signal Through Discrete Time Lti Systems
Communications
Electromagnetics
General Aptitude