Sunday, October 28, 2007

Digital electronics

Digital electronics are those electronics systems that use a digital signal instead of an analog signal. Digital electronics are the most common representation of Boolean algebra and are the basis of all digital circuits for computers, mobile phones, and numerous other consumer products.

The most common fundamental unit of digital electronics is the logic gate. By combining numerous logic gates (from tens to hundreds of thousands) more complex systems can be created. The complex system of digital electronics is collectively referred to as a digital circuit.

To most electronic engineers, the terms "digital circuit", "digital system" and "logic" are interchangeable in the context of digital circuits.

The usual advantages of digital circuits when compared to analog circuits are:

Digital systems interface well with computers and are easy to control with software. It is often possible to add new features to a digital system without changing hardware, and to do this remotely, just by uploading new software. Design errors or bugs can be worked-around with a software upgrade, after the product is in customer hands.
Information storage can be much easier in digital systems than in analog ones. In particular, the great noise-immunity of digital systems makes it possible to store data and retrieve it later without degradation. In an analog system, aging and wear and tear will degrade the information in storage, but in a digital system, as long as the wear and tear is below a certain level, the information can be recovered perfectly.

Tuesday, October 16, 2007

The Etymology and usage of God:

The initial written form of the Germanic word "god" appears from the 6th century Christian Codex Argenteus. The English word itself descends from the Proto-Germanic *ǥuđan. The most linguists concur that the modernized Proto-Indo-European appearance *ǵhu-tó-m was based on the root *ǵhau(ə)-, which destined either "To call" or to "call upon or invoke".

The capitalized form "God" was first used in Ulfilas' Gothic conversion of the New Testament, to signify the Greek Theos.

In the English language the capitalization continues to symbolize a distinction between monotheistic "God" and the "gods" of polytheism. The given name "God" now characteristically refers to the Abrahamic God of Christianity, Judaism, Islam and the Bahá'í Faith. Though there are considerable cultural divergences that are implied by these different names, "God" remains the common English change for all.

The name may mean any associated or similar monotheistic deities, for example the early monotheism of Akhenaten and Zoroastrianism.

In the context of relative religion, "God" is also often related to concepts of universal holy being in Dharmic religions, despite the historical distinctions which divide monotheism from polytheism — a difference which some, such as Max Müller and Joseph Campbell, have characterised as a bias inside Western culture and theology.

Monday, October 08, 2007

Fresh skin-care tips

Select fresh, organically grown fruit and vegetables for the highest benefits. Avoid making more than you require for a single application.Clean and sanitize all countertops and mixing utensils ahead of making any of the recipes. Clean all fruit and vegetables before using as ingredients. Leave all ingredients out of the fridge for up to an hour before integration. Don't let fruit acquire any warmer than room temperature.

Fresh fruit and vegetables are especially high in acids. If you apply anything to your skin and encounter a burning sensation, take out immediately and apply cool water.If you are in the care of a dermatologist and on acne medications, please consult with your physician first.