State (computer science)

In information technology and computer science, a system is described as stateful if it is designed to remember preceding events or user interactions; the remembered information is called the state of the system.

Version

v1 · 2026-09-28 · History

Domain-specific #

12255

Domain group

Applied Sciences & Engineering

Origin domain

Computer Science & Software Engineering

Subdomain

Stateful Systems → Computer Science & Software Engineering

Core Idea

State (computer science) is treated here as the recurring computerscienceandinformation identity summarized by this source-grounded definition: In information technology and computer science, a system is described as stateful if it is designed to remember preceding events or user interactions; the remembered information is called the state of the system. In information technology and computer science, a system is described as stateful if it is designed to remember preceding events or user interactions; the remembered information is called the state of the system.

Scope of Application

• Digital logic circuit state. Digital logic circuits can be divided into two types: combinational logic, whose output signals are dependent only on its present input signals, and sequential logic, whose outputs are a function of.

• Program state. A more specialized definition of state is used for computer programs that operate serially or sequentially on streams of data, such as parsers, firewalls, communication protocols and encryption.

• Program state. In some of these programs, information about previous data characters or packets received is stored in variables and used to affect the processing of the current character or packet.

• Program state. A pure functional subroutine only has visibility of changes of state represented by the state variables in its scope.

• Finite-state machines. The concept of state is formalized in an abstract mathematical model of computation called a finite-state machine, used to design both sequential digital circuits and computer programs.

Clarity

A clear use of State (computer science) names the carrier, the operative relation, and the conditions under which the source treats the identity as present. The minimal definition is In information technology and computer science, a system is described as stateful if it is designed to remember preceding events or user interactions; the remembered information is called the state of the system.

Manages Complexity

State (computer science) compresses multiple computerscienceandinformation details into a stable diagnostic relation. The source shows both the central mechanism—in some of these programs, information about previous data characters or packets received is stored in variables and used to affect the processing of the current character or packet.—and the practical consequence—a pure functional subroutine only has visibility of changes of state represented by the state variables in its.

Abstract Reasoning

1. Type the carrier. Identify the computerscienceandinformation entities to which the claim applies.
2. State the relation. Use the source-grounded identity: In information technology and computer science, a system is described as stateful if it is designed to remember preceding events or user interactions; the remembered information is called the state of the system.
3. Check operation and conditions. This is called a stateful protocol and the data carried over from the previous processing cycle is called the state.
4. Demand recognition evidence.

Knowledge Transfer

Within the home domain. Knowledge about State (computer science) transfers literally when a new case preserves the same carrier type, relation, and recognition test. Digital logic circuits can be divided into two types: combinational logic, whose output signals are dependent only on its present input signals, and sequential logic, whose outputs are a function of both the current inputs and the past history of inputs. A more specialized definition of state is used for computer programs that operate serially or.

Neighborhood in Abstraction Space

State (computer science) sits in a moderately populated region (52^nd percentile for distinctiveness): it has near-neighbors but no dense thicket of look-alikes.

Family — Unclustered & Miscellaneous (2551 abstractions)

Nearest neighbors

• Typing Environment — 0.87
• Memory paging — 0.86
• File system — 0.86
• Natural-Language Programming — 0.85
• Capability-based addressing — 0.85

Computed from structural-signature embeddings · 2026-10-08