DATA REPRESENTATION 2.1 Introduction In the early days of computing, there were common misconceptions about computers. One misconception was that the computer was only a giant adding machine performing arithmetic operations. Computers could do much more than that, even in the early days. The other common misconception, in contra- diction to the first, was that […]
Continue reading…
Posts by Farahat
Introduction to principles of computer architecture : organization of the book and case study: what happened to supercomputers?
Organization of the Book We explore the inner workings of computers in the chapters that follow. Chapter 2 covers the representation of data, which provides background for all of the chapters that follow. Chapter 3 covers methods for implementing computer arithmetic. Chapters 4 and 5 cover the instruction set architecture, which serves as a […]
Continue reading…
Introduction to principles of computer architecture : the system bus model, levels of machines ( upward compatibility and the levels) and a typic al computer system.
The System Bus Model Although the von Neumann model prevails in modern computers, it has been streamlined. Figure 1-3 shows the system bus model of a computer system. This model partitions a computer system into three subunits: CPU, Memory, and Input/Output (I/O). This refinement of the von Neumann model combines the ALU and the control […]
Continue reading…
Introduction to principles of computer architecture : overview, a brief history and the von neumann model.
INTRODUCTION 1.1 Overview Computer architecture deals with the functional behavior of a computer system as viewed by a programmer. This view includes aspects such as the sizes of data types (e.g. using 16 binary digits to represent an integer), and the types of operations that are supported (like addition, subtraction, and subroutine calls). Computer organization […]
Continue reading…
Printing Technologies and Systems : Thermal Printing Technologies, Electro photographic Printing Technology, Magneto graphic and Ionographic Technologies and System Issues.
Thermal Printing Technologies Printing technologies that employ the controlled application of thermal energy via a contacting printhead to activate either physical or chemical image formation processes come under this general classification. There are four thermal technologies in current use: direct thermal, direct thermal transfer, dye diffusion thermal transfer, and resistive ribbon thermal transfer. Direct Thermal […]
Continue reading…
Printing Technologies and Systems : Introduction, Printing Technologies and Nonimpact Printing Technologies.
19.8 Printing Technologies and Systems 19.8.1 Introduction The basic parameters of print quality are resolution, addressability, gray scale, and dot microstructure. A real device also has intrinsic variability in the printing process, producing visual artifacts, which come under the general heading of noise. Some of the more common manifestations of this are background scatter, dot […]
Continue reading…
Network Communication: Wide Area Networks.
Wide Area Networks Applications Wide Area Network Architecture To better understand all of the current and emerging wide area networking technologies and services, a simple model defining the major segments and interrelationships of an overall wide area network architecture is shown in Fig. 19.64. User demands are the driving force behind the current and emerging […]
Continue reading…
Network Communication: Internetworking.
Internetworking Applications: What Can Internetworking Do for You? It is nearly inevitable that sooner or later nearly any organization will need to share information across multiple information platforms or architectures. This sharing may be between LANs that may differ in net- work architecture or network operating systems. Information systems that combine multiple computing platforms or […]
Continue reading…
Network Communication: Local Area Networks.
Local Area Networks LAN Applications Possible business analysis questions for local area networking solutions are listed in Fig. 19.59. This list of business analysis questions is not meant to be exhaustive or all encompassing. Two important things to remember about any list of business analysis questions are 1. The questions should dig deeper into the […]
Continue reading…
Network Communication: General Principles of Network Analysis and Design and Personal Remote Connectivity.
19.7 Network Communication 19.7.1 General Principles of Network Analysis and Design Use of Top-Down Business Oriented Approach Network communication is the transport of data, voice, video, image, or facsimile (fax) from one location to another achieved by compatibly combining elements of hardware, software, and media. From a business perspective, network communications is delivering the right […]
Continue reading…