There are also two queues, which are like stacked registers. Queues can store many pieces of information by stacking them up. The queues are FIFO or “first-in, first-out”, so the first time you read it you get the oldest message. Reading a message from the queue will remove it, so as you keep reading the queue you eventually remove all the messages. When the queue is empty you get a message saying there are no more messages.
FAQ ID : 52741View all FAQs »