Consumer Voice - - Usb Flash Drive -

There are typ­i­cally five parts to a flash drive: (1) Stan­dard-A USB plug – pro­vides a phys­i­cal in­ter­face to the host com­puter. (2) USB mass-stor­age con­troller – a small mi­cro-con­troller with a small amount of on-chip ROM and

RAM (3) NAND flash mem­ory chip(s) – stores data (NAND flash is typ­i­cally also used in dig­i­tal cam­eras) (4) Crys­tal os­cil­la­tor – pro­duces the de­vice’s main 12 MHz clock sig­nal and con­trols the de­vice’s data

out­put through a phase-locked loop (5) Cover – typ­i­cally made of plas­tic or metal, pro­tect­ing the elec­tron­ics against me­chan­i­cal stress and

even pos­si­ble short cir­cuits

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