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Wednesday, June 26, 2013

C.R. Ram (Random Access Memory) (What?)

Ram is commonly referred to as memory. Memory is measured in megabytes, abbreviated MB. Ram is used by the computer as a temporary storage area for the things it is using. The more ram you have, the faster the computer can perform tasks.

C.R.1. SD RAM (Synchronized Dynamic RAM)

SD RAM is manufactured as 148 pin dims. Synchronized means that it is synchronized to interact with the CPU at specific intervals. This means that it doesn’t have to wait for the CPU to be ready since it has time scheduled to communicate with the CPU. Basically, SD RAM is just faster.

C.R.2. DDR (Double Data Rate) SD RAM

DDR attempts to theoretically double performance of the SD RAM memory system by applying double data rate technology to send data on each edge of the clock signal in theory, doubling the data output of a device while not increasing its clock frequency in MHz .

C.R.3. RD RAM (Rambus Dynamic Ram)

RD RAM architecture takes a different approach from SD RAM. Narrow high-speed buses are used. RD RAM transfers data at up to 800 MHz .

C.S.1. Motherboard (What is this?)

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The main circuit board of a computer. The motherboard contains the connectors for attaching additional boards. Typically, the motherboard contains the CPU, BIOS, 184 PIN DDR memories, ULTRA –IDE drive controller serial and parallel ports, PCI expansion slots, and all the controllers required to control standard peripheral devices. Collectively, all these chips that reside on the motherboard are known as the motherboard’s chipset.

ATX motherboard is more popular and has the small advantage that it allows automatic power- off on shut down.

Latest Pentium 4 motherboards include 184 pin DDR memory slots, 478 processor socket, AGP(Accelerated Graphics ports) slots for graphics card, USB port( (U)niversal (S)erial (B)us). New Pentium 4 motherboard has 400MHz OR 433MHz SYSTEM BUS Speed.

The BIOS (Setup program), an acronym for basic Input/output system, is a vital part of a computer’s system, without which nothing can work. Note that if you see the term CMOS in relation to the BIOS, or even mistakenly used as a term for the BIOS, this stands for complementary metal-oxide-semiconductor. This is the material that the BIOS chip is made of, it is not the chip itself – or any of its contents. The BIOS program is the first component to start up when you switch a computer on. When the BIOS program runs, it uses a mathematical technique called the “checksum” to make sure the code it contains is sound. If the code fails to pass the checksum test, the BIOS reverts to using its built-in default settings.

C.S. Computer system (system unit) (What is this?)

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The system unit is the computer. Powerful electronic circuitry that makes up the computer is housed inside the case. Most system unit consist of the computer case with a power supply, motherboards, processor, memory (ram), hard drive, floppy disk drive, CD-ROM drive, disk controller, input/output ports, video adapter, and sound board. The variation of the components inside the system unit is what makes one personal computer more powerful than another personal computer.

C.1.5.Modern Digital Video Camera and C.1.6.Printer (What is this?)

11:46 PM Computer No Comments

Refers to the capturing, manipulation and storage of video in digital formats. A digital video (DN) camcorder, for example, is a video camera that captures and stores images on a digital medium such as a DAT (acronym for digital audio tape, a type of magnetic tape that uses a scheme called helical scan to record data). Modern Video Camera is high resolution, more million colours, and it has video conferencing and video email facility.

Printer is a device that prints text or illustrations on paper. There are many different types of printers. Terms of technology utilized, printers fall into the following categories:

C.1.4.Mouse (What is this?)

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A mouse is a hand held device that controls the movement of the pointer that you see on your screen. The mouse is used to manage objects on the screen.

Modern types of mouse

Intellipoint- Easy scrolling simply roll the wheel forward or backward instead of clicking on a scroll bar or arrow. Zoom quickly. In or out by holding the CTRL key while rolling the wheel (in compatible applications). Work hands- free with Auto- Scroll. Press the wheel, set the scroll speed, and then watch your document scroll automatically.

Intellipoint (Optical) Web Mouse w/ Connector- No ball to roll around and get dirty, only an optical eye. Two additional buttons for easy navigation. Get faster, more efficient Internet navigation without using toolbars or the keyboard. The extra buttons, one on each side, act as forward and back buttons for your browser. New shape and design. Designed for maximum comfort for both left- and right- handed users, IntelliMouse Web’s new two- toned color scheme add a new look and feel that will make your systems stand out.

C.1.3. Speaker (What is this?)

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Speakers might be the important part of a new sound system. Today, many PC speakers include subwoofer to provide enhanced performance for low end bass audio. Particularly effective for adding impact to the sound effects combat oriented games, a subwoofer also enhances music and other content. Not everyone needs the same kind of speakers. After all, that thumping subwoofer might get a tad disruptive in the office. New speakers are available with 3D Sound (refers to a speaker set’s ability to create “Surround Sound”, giving the illusion that the listener is in an actual environment).

C.1.2. Keyboard (What is this?)

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For A Long Time Keyboards Had Standard 101 Keys Until Windows Started Developing New Keys.

Windows Keys

This Group Appeared the First (Right after Windows 94). The Group Consists Of 3 Keys, Which Are Situated Between Alt And Ctrl. WL (Windows Logo) Doubles And Windows Application Key Is Only On The One Side. In Some Keyboards, There Are Internet And Multimedia Keys.

C.1.1 Monitor (What is this?)

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Monitors obviously display what is going on in your computer. They can run at various resolutions and refresh rates. 440x480 is the default resolution for the windows operating systems (this is a low resolution where objects appear large and blocky).440x480 just means that 440 pixels are fit across the top of your monitor and 480up and down. Most users prefer higher resolutions such as 800x400 or 1024x748 all the way up to 1400x1200 (and higher for graphics professionals). The higher resolutions make objects smaller, but clearer (because more pixels are fit in the screen). You can fit more objects on a screen when it is in a higher resolution. Larger monitors are better for running at the higher resolutions. If you run a high resolution on a small monitor, the text may be hard to read because of its small size, despite the clarity.

Flat panel monitors

Flat panel monitors can present excellent image quality, use very little power, emit very little heat and radiation, take up much less space, and are easy on the eyes. But flat screen monitors cost considerably more than standard monitors, although prices have been decreasing over time.

Note that a 17 inch flat panel equates to a 19 inch standard monitor and a 14 inch flat panel equates to a 17inch monitor. This is because the image on these panels reaches from edge to edge, so a 17 inch flat panel gives you nearly 17 inches across of image, which is almost identical to what you will get on a 19 inch standard monitor.

C.1 Modern Computer System (What is this?)

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Most Modern Computers Include Following Visible Pats:

1. Monitor

2. Key Board

3. Speaker

4. Mouse

5. Video Camera

6. Printer

7. Computer System (System Unit)

The Modern Computer (What is this?)

11:20 PM Computer No Comments

Introduction

Modern computer is designed to deliver performance across applications and usages where end users can truly appreciate and experience the performance. These applications include internet audio and streaming video, image processing, video content creation, speech, 3d, CAD, games, multimedia and multi-tasking user environments.

Modern computer can perform high speed processing, sound and video. And it has bigger memory, large capacity of hard disk. Thus it can run sophisticated software like AutoCAD, video capturing and video editing. Most new software needs large memory and large hard disk capacity. To see clear video films need high resolution monitor, high speed CD-ROMS and large hard disk capacity. Now bigger than 40 GB hard disks and 42x CD ROMS are available in the market. To capture and edit films need more memory (around 244 MB) and 32 MB video memory and large hard disk capacity.

A modern computer can use as a television, radio, video camera, video editing units etc.

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