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In his book The Humane Interface, Jef Raskin defines modality as follows: "An human-machine interface is modal with respect to a given gesture when (1) the current state of the interface is not the user's locus of attention and (2) the interface will execute one among several different responses to the gesture, depending on the system's current state."
Upgrading a lock from read-mode to write-mode is prone to deadlocks, since whenever two threads holding reader locks both attempt to upgrade to writer locks, a deadlock is created that can only be broken by one of the threads releasing its reader lock. The deadlock can be avoided by allowing only one thread to acquire the lock in "read-mode ...
A programmable read-only memory (PROM) is a form of digital memory where the contents can be changed once after manufacture of the device. The data is then permanent and cannot be changed. It is one type of read-only memory (ROM).
In computer technology, read-only can refer to: Read-only memory (ROM), a type of storage media; Read-only access to memory using memory protection; Read-only access to files or directories in file system permissions; Read-only access for database administrators in database system permissions
Most file systems include attributes of files and directories that control the ability of users to read, change, navigate, and execute the contents of the file system. In some cases, menu options or functions may be made visible or hidden depending on a user's permission level; this kind of user interface is referred to as permission-driven.
ROM—Read-Only Memory; ROMB—Read-Out Motherboard; ROM-DOS—Read-Only Memory – Disk Operating System; RPA—Robotic Process Automation; RPC—Remote Procedure Call; RPG—Report Program Generator; RPM—RPM Package Manager; RRAS—Routing and Remote Access Service; RSA—Rivest Shamir Adleman; RSI—Repetitive Strain Injury; RSS—Radio ...
read as far as possible to the right (i.e., until the end of the declaration or to the next closing parenthesis, whichever comes first) back up to where you began, and read backwards to the left (i.e., until the beginning of the declaration or to the open-parenthesis matching the closing parenthesis found in the previous step)
Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices. Data stored in ROM cannot be electronically modified after the manufacture of the memory device. Read-only memory is useful for storing software that is rarely changed during the life of the system, also known as firmware.