Toshiba L830-T02R (Wild Rose) is a notebook computer aimed at home Wireless charge 1.40.3 with Intel Core i32367M processor, the main frequency is 40GHz, the Sandy Bridge core architecture is adopted, the three-level cache is 3MB, the front-end bus frequency reaches 0GT/s, and supports dual-core/four-thread processing. The laptop features a 13-inch LED-backlit screen with a resolution of 1366×768 and a screen ratio of 16 Wireless charger 1.40.3 : 9.
Toshiba L830-T02R (Wild Rose Red) is a notebook computer with multiple practical functions in one. Its features include: face recognition technologyTechnique: Make sure your device is secure and easily unlocked. Hard drive encryption: Provides advanced data protection to protect your private information from illegal access. Kensington lock slot: supports anti-theft locking to effectively prevent loss from being used by others.
The level 3 cache capacity of the processor is L3 3M, which means that when performing complex computing tasks, it can quickly retrieve and store data, improving the overall efficiency of operation. The system bus speed reaches 5 GT/S, which means that the speed of data transfer is quite fast, and the performance is quite good for everyday use and light gaming.
1, the principle of the charger The principle of the charger is to convert the electrical energy of the external power supply into the required voltage and current to charge the battery. The structure of the charger is generally composed of a power module, a control module, an output module and a safety protection module. Power module: The power module is the core part of the charger, which is responsible for converting the electrical energy from the external power supply into the required voltage and current to charge the battery.
2, the principle of the mobile phone charger: the mobile phone charger output direct current, and the daily use of 220V ACElectricity is different. Chargers convert alternating current to direct current in order to charge devices such as mobile phones. Mobile phone battery principle: Mobile phone batteries usually use lithium batteries, which is a direct current energy storage device. In the past, mobile phones used nickel-metal hydride batteries, but now they have been replaced by lithium batteries.
3, the charger is actually composed of a stable power supply (mainly a stabilized power supply, providing stable operating voltage and enough current) plus the necessary constant current, voltage limiting, time limiting, overshooting and other control circuits. Output parameters marked on the original charger (cable charge) : for example, output 4V/1A, output 9V/400mA, refers to the relevant parameters of the internal regulated power supply.
4, the principle of car battery charger: the working principle of car battery charging is to convert chemical energy into electrical energy; The process of charging the car battery: electric energy is converted into chemical energy when charging, and chemical energy is converted into electric energy when discharging. When the battery is discharged, the metal lead is the negative electrode and is oxidized into lead sulfate. Lead dioxide is the positive electrode and is reduced to lead sulfate. When the battery is charged with direct current, lead and lead dioxide are produced at the poles, respectively.
Scheme 1: Only change the CPU and graphics card; CPU E8600 Taobao price 700 yuan, graphics card HD4870 or gtx260 Taobao price about 450 yuan.
Your original configuration is relatively balanced, short board in memory, xp system, you can directly increase to 4G, for win7 64bit, directly increase to 6G, so that it will not card. 2: Where is the underapplication? The graphics card is a little bad for games, okayChange sapphire HD6850 1G 800 yuan, so that your computer game performance will have a qualitative leap.
Such an old machine still do not want to upgrade, the meaning is really not much.
It is recommended that you choose the motherboard - Asus P8H61-M LE 499 yuan, (the same H61 chipset, and support dual graphics crossfire, the price is much lower than you choose.) Video card - the GT430 Tiger will D5 499 yuan (the same GDDR5 1024MB video memory, but the core frequency of 700MHZ is slightly lower than the 950MHz video card you chooseA little. But it's enough. Make it fit.
CPU, motherboard, graphics card, power supply, more difficult, Take a look at it CPU AMD Xeron II X3 440 (box) ￥420 motherboard Ming Xuan MS-M3A780 ￥399 Graphics card Ming Xuan HD5550 HD version 512MB ￥499 Power 100 Of course, this is a relatively large action, if the power supply is enough, you can use the old. In the short term, just upgrading the graphics card is not impossible, but the pressure of the motherboard.
If you are used to play games