PSoC is Everywhere
PSoC在热敏打印机的应用
Developing highly-integrated thermal printer-based applications
发展高集成度的热敏打印机应用
Sachin Gupta， Cypress Semiconductor
作者：Sachin Gupta，赛普拉斯半导体
Whenever a money transaction is completed， there is always the need for a printer-based system for printing receipts of transactions， be it a sales terminal，
ticket dispenser， weighing scale， gas station， or ATM. Almost all of these systems use thermal printers. The reason thermal printers are more common as compared to other printer technologies is because of their reliability and lower maintenance costs given they are inkless printers. These printers
work by selectively heating regions of heat-sensitive paper that is infused with a chemical that changes color when it comes in contact with the heated print head.
每次交易完成以后，总会需要打印机来打印交易收据，例如销售终端、售票机、称重计、加油站、或自动取款机。几乎所有这些系统都使用热敏打印机。热敏打印机比其他打印机技术常见的原因是由于他们的高可靠性和低维护成本，因为他们是无墨打印机。这种打印机工作方式是选择性地加热热敏纸区域，热敏纸含有化学成分，当它接触到热的打印头时会改变颜色。
Thermal printers， however， are much more than just a printing unit. They have many other components， including a key matrix to enter data， some communication protocols to communicate with the host， an LCD to display data， an ADC for measuring voltage， and so on. This article talks about the basics of designing a thermal printer based system.
然而，热敏打印机远不止是一种打印单元。他们有很多其他部件，包括输入数据的关键矩阵，与主机通讯的一些通信协议，显示数据的LCD，电压测量的ADC，等等。本文将讨论述热敏打印机系统的基本设计。
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