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ringtone

Definition:

A ringtone is a sound or music clip that replaces the standard ring sound on a mobile phone. Many mobile phones can have multiple ringtones which allows you to associate specific ringtones with specific callers in your mobile phone contact list. Ringtones can be purchased over the Internet and downloaded to your mobile phone or in some cases, ringtones can be purchased directly from your mobile phone.

Here's a word you may not know...

SRAM

SRAM - SRAM stands for static random access memory. The static nature of SRAM means it does not need to be refreshed periodically. This is in contrast to DRAM or dynamic memory which needs to be refreshed periodically. SRAM requires more transistors than its DRAM counterpart which many consider to be a disadvantage of SRAM.