The Microcontroller Memory Map
a microcontroller is a set of resources. Each resource is identified by one or more addresses in an address space. The memory map is a graphic representation of how the resources are associated with addresses. More ...
Operating System Memory Paging - Page Table Structure
One method of memory management is to break physical memory into fixed size blocks and break logical memory into same sized blocks called pages. The physical location of pages is tracked by a page table. More ...
Microcontrollers
A microcontroller is an IC that contains a microprocessor as well as RAM, ROM and general I/O ports. Engineers design microcontrollers into specific-purpose devices such as microwave ovens, cars, washing machines, refridgerators, and even space probes. More ...
Data Structures - Linked List, Stack, Queue, and Tree
An array is a simple data structure in which each element can be accessed directly. But what about storing an item whose size may vary? And what about removing an item if the relative positions of the remaining items must be preserved? In such situations other data structures may be needed. More ...
Basic Electronics for Computer Architecture
To understand computer architecture, it is necessary for you to have a basic understanding of electronics. This article explains how all the amazing things that can be done with electronics are the result of one simple thing - electric charge. More ...
Digital to Analog Convertion with a Microcontroller
Digital to analog conversion (DAC) is the process by which a digital signal (expressed as a string of 1s and 0s) are converted to an analog signal (a continuously varying voltage). More ...
Capacitors in AC Circuits
In an AC circuit capacitors exhibit a property similar to resistance called reactance and cause a phase shift between votage and current. The vector sum of resistance and reactance in an AC circuit is called impedance. More ...
Intel Celeron D Processor
The Celeron processor is a budget processor offering moderate performance at an affordable price. The Celeron processor is suitable for use in notebook and desktop computers running home-office applications and providing access to the Internet. More ...
Real-Time CPU Scheduling
In a real-time systems, is one whose operation depends on timing. A task must be serviced within a specific time interval. The tasks and their execution times must all be known. More ...
Multithreaded Programming Process' and Threads
A process generally has a complete, set of private resources, each process has its own memory space. Threads exist within a process, every process has at least one. Threads share the process's resources, including memory and open files. More ...
Operating System Memory Protection in a Paged Environment
Memory protection in a paged environment is accomplished by protection bits associated with each frame. For example read-write, read-only or execute-only bit, and valid-invalid bit. Normally, these bits are kept in the page table. 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 ...
