Home Object Oriented Design • Read e-book online An introduction to categories in computing PDF

Read e-book online An introduction to categories in computing PDF

By Jay C.B.

Show description

Read or Download An introduction to categories in computing PDF

Similar object-oriented design books

Beginning Java and Flex: Migrating Java, Spring, Hibernate - download pdf or read online

During the last few years, the now open resource Adobe Flex Framework has been followed through the Java group because the hottest framework for Java RIAs utilizing Flash for the presentation layer. Flex is helping Java builders to construct and continue expressive web/desktop purposes that set up continually on all significant browsers, computers, and working platforms.

Read e-book online Secrets of the JavaScript Ninja PDF

SummarySecrets of the Javascript Ninja takes you on a trip in the direction of gaining knowledge of smooth JavaScript improvement in 3 stages: layout, development, and upkeep. Written for JavaScript builders with intermediate-level talents, this booklet provide you with the information you must create a cross-browser JavaScript library from the floor up.

New PDF release: Java Web Services: Up and Running: A quick, practical, and

This example-driven publication deals a radical advent to Java's APIs for XML net providers (JAX-WS) and RESTful internet companies (JAX-RS). Java internet prone: Up and operating takes a transparent, pragmatic method of those applied sciences via delivering a mixture of architectural evaluation, whole operating code examples, and brief but distinct directions for compiling, deploying, and executing an program.

Get Rapid BeagleBoard Prototyping with MATLAB and Simulink PDF

As an open resource embedded single-board machine with many common interfaces, Beagleboard is perfect for construction embedded audio/video structures to gain your sensible principles. The problem is tips to layout and enforce a very good electronic processing set of rules on Beagleboard speedy and simply with out in depth low-level coding.

Extra info for An introduction to categories in computing

Sample text

4 Usability The conventional way to address usability is through intensive training. But the time required is prohibitive. Already reducing training time is a key business need... There is another way: Instead of trying to teach the user about how the computer system works, we can exploit knowledge already in the user's head. But how do we do that? Let's start by considering how people deal with technology in general, and then apply it to computers. In discussing how people use technology (such as a video player, a swing door, a cooker, or a computer), Donald Norman [Norman 1990] identifies three conceptual, or mental models that are important in the operation of such devices.

The problem arises when the designer's model of this workbench is that of an application that contains all the things required for the given set of business processes. This is the flip-side—the developer's side—of the ‘application problem’, and in this section we further explore the problem. ). The company decided that new developments would have an object-based user interface on PCs (and that data would be held on a mainframe). Shortly after this decision was made, the AD department was asked to implement two different business processes— order entry and contracting.

Thus, for a person to formulate a good user's model, the designer must make his (the designer's) model obvious through the system image. The difficulty is understanding how the user builds a conceptual model. Norman describes the psychology of the user's conceptual model as being built from everyday experience. The user will attempt to transfer existing knowledge to new systems: N If the new system fails to match his conceptual model he will find it difficult to learn (leading potentially to frustration and rejection) N If it does match, he will rapidly gain confidence in its relevance and applicability The ‘usability iceberg’ Mapping this to computer user interfaces indicates that users' conceptual models are of crucial importance to computer usability.

Download PDF sample

An introduction to categories in computing by Jay C.B.


by Richard
4.5

Rated 4.85 of 5 – based on 32 votes

Author:admin