Epicep 21H Technology Site

Posts Tagged ‘computers’

Copyright 2006 Otis Cooper

The System Memory is more commonly called RAM or Random Access Memory. This is the memory used by the computer to hold programs and data.

This data is lost once the computer is turned off.Because demands by powerful software have skyrocketed, system memory requirements have been accelerating at an alarming pace.

Random Access Memory is mounted directly onto the motherboard and transfers data by use of address and data buses. Each data bus consist of a number of circuits.

In 1985, Intel had the 386 processor with its 32 bit bus and the Pentium processor came along in 1993 with a large 64 bit bus. RAM memory is made using DRAM Chips.

RAM chips are large rectangular shaped and made with memory cells with support logic that reads and writes data. These chips must be continously refreshed, that is, data is constantly sent to allow the cells to hold data.

Information being transferred between the CPU Chip and RAM memory is called a memory cycle. During the late 90s, the DIMM chip was the standard RAM Chip. So just what is this DIMM chip? Let’s talk about the different Ram memory chips used in the computer.

Static RAM is a type of RAM that holds its data without being refreshed, for as long as power is supplied to the circuit. This is contrasted to dynamic RAM (DRAM), which must be refreshed many times per second in order to hold its data contents.

TYPES OF RANDOM ACCESS MEMORY CHIPS

SIMM or Single Inline Memory Modules came on the scene in the early 90s. The SIMM chips first came with 30 pins. And then the 72 pin SIMM which had 32 bit data paths or buses.

DIMM or Dual Inline Memory Module replace the Simm chips. These chips had 168 pins as compared to the 72 pin Simm variety. The data bus of the 30 pin chip was 8 bits while the 72 data bus can send data on the 32 bit data bus. Read the rest of this entry »

Copyright 2006 Otis Cooper

The Motherboard is the largest component in your PC and the Central Processing Unit is its brain. But when your input devices go on the blink, you’re shut down for awhile. When Computer Mice problems come, we don’t panic as fast when we cannot access our hard drive.

When you grab your Mouse and either click or roll the buttons and nothing happens, your computing fun stops. Even though the mouse is a little input device, you will wish you understood its every aspect when it dies.

When input device failure occurs, the problem may lie with the computer’s hardware,the mouse, the OS or Operating System. Let’s take a look at what you should check when mouse failure occurs. If you need help with mouse components, http://www.ultimatepcrepair.com contains photos of every component in the computer.

When the mouse dies, you should be able to perform the same functions with the keyboard. It may be a little closer but you won’t be shut down completely.

NO MOUSE MOVEMENT

First…If the mouse has no movement, first look at the mouse connection at the rear of the computer.Be sure it is plugged in completely.

Second…remove the plug and inspect for connectors or pins that may be broken or bent. The connector is color coded with green being that of the mouse.

If your mouse uses the USB or Universal Serial Bus connector, check the connectors for any damage and be sure it is plugged in.

MOUSE STOPPED DURING OPERATION

Should your mouse quit in the middle of computing, save your work immediately. Press the ALT key to access your program and save your work.

Check the connection in the rear to be sure it has not worked itself loose.If the connection is tight, inspect the mouse components for birt.
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You won’t have to worry about losing valuable data again if you find the best backup software for your home or office. Whether your main concern is to keep a copy of all your documents or to encode sensitive information, you can find the best backup software that contains the best of both of these features and more. Backup software may not always be cheap, but it is an essential investment for preserving and protecting valuable information.

If security is your main concern, there is backup software that has five different encryption alogrithms that protect your data against hackers. You can also have the file name encrypted for added security. It is easy to add new folders, and you can build your files at the click of a mouse.

The best backup software will:

• Create a backup program
• Choose files for backup
• Define compression settings
• Choose target of the backup

You can have all of your files backed up automatically, or you can pick and choose files to back up. Changes can be made constantly, and most backup software is flexible enough to accommodate multiple versions of the same document or selected revisions. If you want to conserve space, you can select the highest level of compression to make more room. It is also easy to choose which location you want you files stored, whether it is in:

• Hard drive
• USB stick
• Network Folder
• CD
• DVD
• Remote FTP Server

Most backup software employs automatic backup programs that will store your information as it is created. You can choose scheduled backup instead, if you prefer. It is possible to store multiple versions of a document and the wizard feature restores files to their original folders.
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What’s the big deal behind the Apple iPhone? It’s expensive. It’s revolutionary. But are its features worth the money?

With all the popularity, you can assume everyone’s at least heard about it. What does the Apple iPhone feature and what can it do?

#1: Multi-Touch Technology

The most outstanding feature is the iPhone’s radical multi-touch screen. The MT screen allows any mechanical button to appear on this high tech toy. It simply allows you to use your fingers to operate it. This is contrary to any other phone today, which either have mechanical keyboards or a stylus.

By tapping the screen with your finger, you can navigate menus, dial phone numbers, write e-mail messages and likewise use the whole functionality of the popular gadget. The three-point-five-inch screen displays a keyboard for inputting text via multi-touch. Most consumers are seemingly skeptical about typing with the virtual keyboard, but Apple has predicted the common problems and has made sure the iPhone was constructed with features like automatic spell check and word prediction, not to mention an enhanced customizable dictionary. More so, the iPhone addresses the problems of typos commonly known to multi-touch usage by adding self-correction capabilities.

When scrolling, the usual wheel is not found at the side of the gadget. The multi-touch screen functionality allows its owner to scroll by dragging a finger in the desired direction. The speed of scrolling is designed to be proportional to the speed at which you drag your finger.

The multi-touch feature furthermore enables several more functions like multi-touch sensing for magnifying or reducing photos and even web pages. Using this feature, you can regulate object size simply by placing two fingers at the side of the object and then moving them, by dragging, either further apart or closer to one another. This feature does not distort images because images are initially scaled according to its original dimensions in the first place.

Hands down, the iPhone is more intelligent than any other phone today.

#2: Revolutionary Sensors

The gadget’s sensors have the ability to detect changes to the iPhone’s environment. The sensors are minuscule yet absurdly powerful. The three major sensors include an accelerometer, sensor for ambient light, and a proximity sensor.
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