State transition function

State transition function
A process or state of codes that carry a program state from one to another.

Finite State Machine

Finite State Machine
A model in which there are finite states. After a given set of inputs, a state changes according to the state transition function. 

Controlled data flow graphs

Controlled data flow graphs(CDFG)
Modeling by representing the controlled decision at the nodes and program paths(DFGs) that are traversed consequently from the nodes after the decisions.

Acrylic DFG

Acrylic DFG
A DFG model when the assignment to an input is fixed.

Data Flow Graphs (DFG)

Data Flow Graphs (DFG)
The code for each process is represented by a circle and the data inputs to the process are from incoming arrows and generation of data output is through the outgoing arrow(s).

Model

Model
It is a representation by which a problem, process, design , or analysis can be easily understood and the problem becomes simplified after modeling. 

Optimization of Memory

Optimization of Memory
Certain steps changed to reduce the need for memory and having a compact code. It reduces the total size of the memory needed. It also reduces the total number of CPU cycles, and thus, the total energy requirements.