1 in 3 laptops die in first three years
So your new laptop computer died in inside of a year. “I’ll never buy a computer from [insert manufacturer name here] again!” I’ve heard the protests time and time again.
Apple Ibook G4 12 inches Laptop spec
L2 Cache Memory
Installed size: 512 KB
Data Bus Speed: 167 MHz
Processor: PowerPC G4 1.67 GHz
RAM Installed Size: 512 MB/2 GB(maz)
Technology: DDR2 SDRAM-333 MHz
Memory Specification: PC2-4200
Storage controller type: IDE
Hard Drive: 80GB-5400rpm
Optical storage type: DVD±RW (+R DL) – integrated
Display type: 15.2″TFT
O/S Provided: Apple MacOS X 10.4
Graphics Processor/Vendor: ATI Radeon 9700 AGP 4x
Wireless [...]
How to fix the logical bad sectors
The logic of how to fix hard disk bad sectors?
Logical bad sectors can be said is a soft bad sectors, the disk using the Windows tool can easily be repaired. Specific method is: Go to “My Computer” window, right-click the disk partition bad sectors appear the icon, click the “Properties” menu item, open the disk [...]
Hard disk
01) defragmenting the hard disk “failure”
Recently the use of Windows native defrag functions encounter a strange question, select the. Set by “analysis” button, it says “need to Defrag the hard disk” and then click the “order”, too – after the prompt “order complete”, but distribution of data on the hard disk does not happen any [...]
Fault Diagnosis and Treatment
Computer operating system is running the most basic, most central and most important software programs control and manage computer hardware (CPU, hardware, keyboard, mouse, graphics etc), software resource (a variety of applications and data files ). There is now more common operating system Microsoft (Microsoft) Windows family, Apple’s MAC series, there is a more common [...]
the basic software system diagnosis and treatment array
Introduced in front of computer failure is divided into two categories, namely, “hard failure” and “soft failure” to learn the “hard failure” of the basic diagnosis and treatment, the next will learn “soft failure” of the basic diagnostic and treatment .
Software failure occurs, mainly due to software errors, improper operation of the user, system configuration [...]
Commentary on the radar
Radar technology developed to this stage, already has more mature and more complete theoretical basis and practical experience; However, the radar technology still bound by some basic physical laws, it is difficult a “miracle.” In contrast, radar technology, every major technological advances are needed after several years or even ten years of hard work.
This stage, [...]
antennas and antenna arrays- radio propagation
Currently, countries in the world to promote the third generation mobile communication systems, while industrial, research focus has gradually Beyond 3G third generation of people after the> or the new generation of 4G mobile communication technology, wireless broadband communications technology, the research group aims to make wireless communications spectrum efficiency, capacity and rate of ten [...]
The mouse without wire
Now, more and more wireless products, computer peripherals are also many were made of wireless, where the mouse is now a popular wireless product.
Wireless mouse from there to now have a couple of years, and now the mouse is the most widely used wireless technology Bluetooth and 27MHZ, advantages and disadvantages of the two technologies [...]
Motherboard: Members of the platform
You must often hear people say: this computer unstable, often crashes! Stability and instability of a computer, motherboard significant, this and a person’s body is not good, the cold is often the same reason. When you open the shell of the host computer, you will see a board studded with a variety of small circuit [...]
Why is it called a PC Computer
Developed in the computer several different stages, IBM occupy a major position in the mainframe in particular was a great success, IBM has been growing as an international model of large companies, as Big Blue. Moreover, in the development of micro-computer, it also made a great contribution.
Why does Apple Noble?
Apple Computer Inc. was founded in 1976, Apple is brilliant throughout the industry set to create history and one of the founders. First of all the companies with some people and a personal computer applications, although in recent years with the PC computer’s fierce competition in the market share drop sharply, but still has not [...]
Cadmium – nickel battery charge and discharge performance
Cadmium – nickel battery charging process, with the charge to the battery voltage increases, when the voltage exceeds 1.55V, the electrolyte water electrolysis, precipitation of gas, reduce the charging efficiency, charging efficiency of 85 normal % of. Cadmium – nickel battery charge voltage and charging mechanisms. The greater the charge current, charge voltage higher charge [...]
Secondary battery cycle life
For the secondary battery (batteries, rechargeable batteries) is concerned, life cycle or life cycle is also a measure of battery performance of an important parameter. After a secondary battery charge and discharge, as a cycle, or call a cycle.
Certain discharge conditions, the battery capacity dropped to a specified value before the number of cycles the [...]