1. Assume that we have a keyboard that is connected to a microcontroller. When is operating the keyboard in interrupt-driven mode beneficial? Explain each selection. (multi-choice) a. The inter-arrival time of keystrokes is fixed. b. The inter-arrival time of keystrokes is unknown. c. The average inter-arrival time of keystrokes is in the same order as the micro controller's frequency d. The average inter-arrival time of keystrokes is orders of magnitudes larger than the micro controller's frequency

1. Assume that we have a keyboard that is connected to a microcontroller. When is operating the keyboard in interrupt-driven mode beneficial? Explain each selection. (multi-choice) a. The inter-arrival time of keystrokes is fixed. b. The inter-arrival time of keystrokes is unknown. c. The average inter-arrival time of keystrokes is in the same order as the micro controller's frequency d. The average inter-arrival time of keystrokes is orders of magnitudes larger than the micro controller's frequency

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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8086 circuit, assume that the connection of ports A and B is as follows. An information parallel to Port A, or input is provided using the push button. 74LS47 (BCD->display converter) to port B) connected, 7-segment display is placed at the output of the converter. From the A-g inputs of the display characters are created by giving the corresponding led light on the display, whichever is 1. 74LS47 received from Port B binary information provides a conversion to show the correct number on the display(For addresses of ports a and b. By dividing the number consisting of the values (in this order) found in d0, d2, d4 and d6 from the information in Port A by two enter the code showing the result in the range 0-F on the display (if the result is two digits, one digit).
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