C.P.U. , central processing unit, central processor, CPU, mainframe, processor - (computer science) the part of a computer (a microprocessor chip) that does most of the data processing; the CPU and the memory form the central part of a computer to which the peripherals are attached.
#1 800-275-8777. Phone Number: If you need to speak to a live customer service representative at the United States Postal Service (USPS), the best phone number to call is 800-275-8777. This includes tracking lost packages or general questions about something youâve mailed or a package you are expecting.
This enables you to register yourself to the USPS and keep the record of your package. 1  Tracking by SMS -The USPS also proved a platform to track your shipment through SMS. You just need to type your tracking number and send it to 28777. 2  Tracking by call â You can call on 1-800-222-1811.