I/O - (Input/Output|Read/Write) - Data Access
Table of Contents
1 - About
IO = Input / Output = Writing and Reading data.
An I/O request is a general term that refers to a read or write request to a memory (storage device).
It can also be the network
In computer architecture, the combination of the CPU and main memory (i.e. memory that the CPU can read and write to directly, with individual instructions) is considered the brain of a computer, and from that point of view any transfer of information from or to that combination, for example to or from a disk drive, is considered I/O.
The CPU and its supporting circuitry provide memory-mapped I/O that is used in low-level computer programming in the implementation of device drivers.
An I/O algorithm is one designed to exploit locality and perform efficiently when data reside on secondary storage, such as a disk drive.
This section is talking only about the reading and writing of bytes through file.
- For character, see (Text|String|Character)
- For the manipulation of file through a file system, see File (System, Transfer, Storage)
Can reading something be considered as writing it to your brain? Annette Bieniusa