You may not think of salt and sugar as solids because when you see them in the kitchen they are such small particles. But each of these particles is as much a solid as a wooden table, a glass window, or a gold piece of jewelry. A solid is a collection of atoms or molecules that are held together so that, under constant conditions, they maintain a defined shape and size.
Pulse Width Modulation, or PWM, is a technique for getting analog results with digital means. Digital control is used to create a square wave, a signal switched between on and off.
CRM is a dominant management tool that can be used to enhance the sales potential and further increase the value of the customer for the bank. In general, CRM incorporates various components of a bank's business for example, sales, marketing, IT and accounting. This approach may not increase a bank's profit suddenly, but it will definitely boost customer loyalty to the bank.