When buying a laptop, we should carefully consider the configuration factors, because this determines the running time and operating efficiency of the computer.
1. CPU: All operations of the computer are controlled by the CPU. The performance index of the CPU directly determines the performance index of the microcomputer system. At present, the mainstream in the market is Pentium, Core i3, i5 and the so on.
2. Display screen: LCD monitor is the most expensive part of notebook computer. The mainstream screen size is 14.1 inches, and there are 15 inches. If the user travels frequently, it is recommended to choose some ultra-thin and ultra-light notebooks. The screen is between 12 inches and 13 inches. It's more comfortable.
3. Memory: It is used to temporarily store the calculation data in the CPU and the data exchanged with external memory such as hard disk. All programs in the computer are run in the memory, so the performance of the memory has a great impact on the computer. At present, the mainstream of the market is 2G/4G, and 8G memory.
4. Hard disk capacity: As the data storage of the computer system, the capacity is the most important parameter of the hard disk, which mainly considers the hard disk capacity and speed. The mainstream in the market is 500 and 1T capacity, 5400 speed and 7200 speed.
5. CD-ROM drive: currently popular with DVD-RW (DVD burning). From the perspective of use and economy. Pay attention to the stability of the CD-ROM drive, the sound of the CD-ROM, the error correction capability when reading the CD-ROM, the speed of the CD-ROM drive, etc.
6. Battery and power adapter: buy lithium battery as much as possible, and for power adapter, you should pay attention to it after working for a long time, if the temperature is too high, it will not be normal.
7. Expandability: Full consideration should be given to the expandability and upgradeability of the product. The most frequently used USB interface has many better ones, and it can be easily connected to various peripherals such as digital cameras, scanners, and mice.
8. Whether the operating system is pre-installed: If there is no pre-installed operating system, it is the so-called "bare metal". This has a certain impact on the stability of the system.
9. Brand: It is best not to buy a laptop for cheap or high specifications. Brand guarantee is meaningful at the time of purchase, because a company with a good brand image usually has a larger investment in technology and maintenance services, which is reflected in the price of the product. In addition, the software and overall application matching, documentation, accessories, etc. will also be more attentive.