slowest device for data transfer
I think it would be Cd's or Dvd's.
A direct data device is a device that can transfer data automatically from a document eg. a barcode reader reads a barcode
USB
The direct memory access or DMA mode of data transfer is the fastest amongst all the modes of data transfer.In this mode ,the device may transfer data directly to/from memory without any interference from the CPU.The device requests the CPU through a DMA controller to hold its data,address and control bus so that the device may transfer data directly to/from memory.
A wireless device, that lets you transfer, answer, or call for data from a device, like a Computer, or phone.
Transfer rate.
it is a device to transfer the data directly between io device and memory without through the cpu so it performs a high-speed data transfer between memory and io device
A data cable can be used to transfer information from a device to another device, such as a cell phone or computer.
access time
DMA transfer mode
compact disk
For example, personal digital assistants and cellular telephones communicate with desktop computers through data transfer.