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Andres Martinson
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Motherboard - the principle printed circuit board assembly in a computer; includes core logic (chipset), interface sockets and/or slots, and input/output (I/O) ports. Printed circuit board (PCB) - a thin, laminated sheet composed of a series of epoxy resin and copper layers and etched electronic circuits (signal, ground and power) Chipset (or core logic) - two or more integrated circuits which control the interfaces between the system processor, RAM, I/O devises, and adapter cards. Processor slot/socket - the slot or socket used to mount the system processor on the motherboard AGP - Accelerated Graphics Port - a high speed interface for video cards; runs at 1X (66MHz), 2X (133MHz), or 4X (266MHz). PCI - Peripheral Component Interconnect - a high speed interface for video cards, sound cards, network interface cards, and modems; runs at 33MHz. ISA - Industry Standard Architecture - a relatively low speed interface primarily used for sound cards and modems; runs at approx. 8MHz. RAM - Ran
Eriala: Informaatika Inglise keel Referaat «Trojan horse » Lektor S.Remmelg Üliõpilane A.Parts Rühm RDIR23 Kood 103373 Introduction Trojan (also - troyamn, troyamnets, troyamnsky horse Troma) - a program used by an attacker to gather information, its destruction or modification of, computer malfunction or use of its resources in the wrong purposes. According to the principle of distribution and of the Trojans is not a virus because it does not spread by self-reproduction. This Trojan is run by the user manually or automatically - the program or part of the operating system running on a victim computer (as a module or utility). For this program file (the name, icon of the program) is called the official name of masquerading as another program (such as the installation of another program), another file type, or just give us attractive to run a name, icon, etc. Similar mali
1 nädal. Sissejuhatus: arvuti ja info, ajaloo algus ... 1940 Meanings: Bit - the smallest unit of storage ( 1 binary digit) Byte - collection of 8 bits / is a unit of storage, 8 binary digits long Kilobyte - A unit of storage capacity (1024 bytes ) Megabyte - 1,048,576 bytes Gigabyte - 1,073,741,824 bytes Terabyte - 1 trillion bytes Algorithm - is a step by step method of solving a problem Program - is the expression of an algorithm in a programming language. ALGORITM - kindel eeskirjade jada, mis määrab üheselt ülesande lahenduskäigu. PROGRAMM - programmeerimiskeeles kirja pandud algoritm Greek logicians ( Kreeka loogikud ): Parmenides (5 sajand e.m.a.) : kasutas pikki loogilisi põhjendusi. Zenon Eleast (5 sajand e.m.a.) - apooriad/paradoksid Sofistid - Sokrates (470-399 e.m.a) - Platon (428/427 - 348/347 e.m.a): Aristoteles : väidete struktuur kui iseseisev uurimisobjekt Aristoteles Süllogismide näited: 1. eeldus: iga koer on imetaja. 2. eeldus: mõned nel
1.The Conceptual Architecture identifies the high-level components of the system, and the relationships among them. Its purpose is to direct attention at an appropriate decomposition other system without delving into details. Moreover, it provides a useful vehicle for communicating the architecture to non-technical audiences, such as management, marketing, and users. Logical Architecture In Logical Architecture, the externally visible properties of the components are made precise and unambiguous through well-defined interfaces and component specifications, and key architectural mechanisms are detailed. The Logical Architecture provides a detailed "blueprint" from which component developers and component users can work in relative independence. Logical Architecture. Model System Behavior Execution Architecture An Execution Architecture is created for distributed or concurrent systems. The process view shows the mapping of components onto the processes of the physical system, with atte
Misusing and Abusing the IoT - Now and in the Future The Internet of Things is the network of physical objects—devices, vehicles, buildings and other items which are embedded with electronics, software, sensors, and network connectivity, which enables these objects to collect and exchange data [1]. As the amount of devices connected to the internet of things is constantly on the rise, making it innately more secure and protecting those devices from abuse, in a sense of unwanted access , manipulation by third parties and other scenarios, is rapidly turning into a pressing issue. According to some sources there were about 13.4 billion connected devices back in 2015 and the projections show there might be up to 38.5 billion such devices in 2020 [2]. As the number of devices increases, the necessity for a proper security mechanism concerning those devices becomes a priority in order to safely adopt the evergrowing internet of things into every aspect of a persons daily life. Privacy On
ADVANCES IN TECHNOLOGY 1. My new cellular phone allows me to send text messages anywhere within the country and abroad. (communications) 2. Don't forget to turn on the modem if you want to go-online. (information technology) 3. The advent of endoscopic surgery has greatly reduced the post-operative recovery time of most patiens. (medical) 4. Supermarkets of the future will make use of scanners to read the contents of your trolley and total up your bill. (electronics) 5. Factories which rely on humans working on assembly lines are becoming a thing of the past. (industrial) 6. You would be quite astounded by the number of satellites orbiting the Earth. (space) 7. Not only would a solar powered vehicle be safe, it would also make use of one of the planet's greatest natural resources. (energy) COMPUTERS 1. I'm terribly sorry I'm late but traffic congestion in and around the city just keeps getting wor
Analog Interfacing to Embedded Microprocessors Real World Design Analog Interfacing to Embedded Microprocessors Real World Design Stuart Ball Boston Oxford Auckland Johannesburg Melbourne New Delhi Newnes is an imprint of Butterworth–Heinemann. Copyright © 2001 by Butterworth–Heinemann A member of the Reed Elsevier group All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Recognizing the importance of preserving what has been written, Butterworth–Heinemann prints its books on acid-free paper whenever possible. Library of Congress Cataloging-in-Publication Data Ball, Stuart R., 1956– Analog interfacing to embedded microprocessors : real world design / Stuart Ball. p. cm. ISBN 0-7506-7339-7 (pbk. : alk. paper) 1. Embedded computer
oData transparency: In bit and byte oriented protocols, there is a problem if a control character (for ETX (End of Text) ·Same as ETB, only no more blocks will follow. ITB (End of > Differences with HDLC length of protocol field (1B or 2B) byte-oriented protocols) or the start-of-frame flag (for bit-oriented protocols) appears in the actual data. Intermediate Transmission Block) ·Same as ETB, except that the receiving statio Differs from HDLC because of multiaccess MAC that provides · Maximum payload length (default: 1500) This was not likely to happen in ASCII text, but is very likely with binary data. This is known as a data will not acknowledge after the error checking. EOT (End of Transmission) framing/error detection: · Type of CRC (2B or 4B) transparency problem an can be rectified with byte stuffing (for byte-orien
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