網(wǎng)上購物系統(tǒng)是隨著電子商務(wù)的發(fā)展而發(fā)展起來的，它簡單、快捷、成本低，越來越受人們的歡迎。
網(wǎng)上購物系統(tǒng)主要有以下功能：商品的展示，搜索商品的功能，虛擬購物車，顧客個人信息記錄，安全的網(wǎng)上支付。其中，商品的展示可以供顧客瀏覽和挑選。搜索功能允許你通過各種參數(shù)來搜索所售商品。顧客可以把購買的商品放到購物車保存直到他離開。信息記錄把顧客的購買情況記錄下來可以讓顧客查看他們的購物記錄。你可以選擇不同支付方式付款。系統(tǒng)對顧客來說是非常方便的。
系統(tǒng)采用ASP技術(shù)，基于B/S結(jié)構(gòu)，用SQL Server 2000作為數(shù)據(jù)庫。
Hey. This some pid code for the atmega88 that I once used to control a heater. It s purpose
is pretty specific, and I only wrote it to work on the mega88, so the code itself won t be too useful. It is
a good place to start if you re trying to use or figure out pid though.
This submission includes the presentation and model files that were used in delivering a webinar on 12-15-05 that covered the topic of modeling Hybrid Electric Vehicles.
Hybrid electric vehicles (HEVs) have proven they can substantially improve fuel economy and reduce emissions. Because HEVs combine an electric drive with the internal combustion engine (ICE) in the powertrain, the vehicle?s kinetic energy can be captured during braking and transformed into electrical energy in the battery. The dual power source also means that the ICE can be reduced in size and can operate at its most efficient speeds.
