Program Flow Charting

Depending upon the language used, program code my be difficult for humans to read and understand. However, one type of programming that is very easy to understand is flow charting. More ...

The Evolution of Hard Disk Bit Recording

Hard drive technology has continuously improved over the decades, that includes higher storage capacity performance. Part of this improvement has been higher access speeds, but most of the higher storage capacity has been the result of changes in the bit recording methods. More ...

Virtual Memory and Memory Paging

In the early days of computers, memory chips were small capacity, scarce, and expensive. Because of this a memory management scheme called paging was invented. More ...

Introduction to Boolean Algebra

Boolean algebra is a system of mathematics in which the values of the variables can take on only one of two values, either 0 or 1. Similar to regular algebra, Boolean algebra can be used to simplify a mathematical expression. Since computer logic is also a system in which the values of the inputs and outputs can take on only one of two values, Boolean algebra can be used to simplify logic circuits. More ...

Intel's Dual-Core Core i3 Processor

Core i3 is an entry-level 2-core processor using the 32nm Westmere micro-architecture. With a Thermal Design Power (TDP) of 73 watts, the i3-530 is a cool-running chip that doesn't gobble loads of electricity, so those looking for a power-efficient, quiet machine will be happy with it. More ...

Digital Logic Levels and Transfer Characteristics

A digital system uses discrete logic levels, 0 and 1, while the real world is a continuous range such as a voltage from 0 to 5. To make design easier, engineers view the system in the abstract. More ...

Windows Operating System Services, Functions, Routines, Processes, Threads, and Jobs

The Windows operating system uses many confusing terms. This article explains the meaning of the terms: Services, Functions, Routines, Processes, Threads, and Jobs. More ...

How Computer Chips are Made

The oxygen is removed from silica by heating it with carbon. A tiny seed of silicon is then dipped into molten silicon. As the tiny crystal is slowly lifted out of the crucible silicon crystallizes around it. More ...

Binary Floating-Point Numbers

Floating-point numbers allow you to use the very large, and very small, numbers commonly found in scientific calculations. A binary floating-point number consists of three parts, the sign bit, the mantissa and the exponent. More ...

Inductors in DC Circuits

An inductor is constructed with a coil of wire. When connected to a voltage source, an inductor resists a change in current flow as it stores energy in its magnetic field, and it can return that energy to the circuit if desired. More ...

Binary Number Representation and Binary Math

Computers perform all of their amazing work with only two voltage levels, one representing binary 0, the other representing binary 1. This article describes how to perform binary addition and subtraction. More ...

Direct Memory Access (DMA)

In early computers, all data transfers required the processor to read and write single words from memory until the entire transfer is complete. With DMA, the DMA controller takes control of the system buses to move data between the device and main memory. More ...