Scicos Block
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##
Delay operator (Old block)

### Contents

- Delay operator (Old block)
  - Description
  - Dialog box
  - Default properties
  - Interfacing function
  - Computational function

### Description

The Unit Delay block delays its input by the specified sample period. This block is equivalent to the z-1 discrete-time operator. The block accepts one input and generates one output, which can be either both scalar or both vector. If the input is a vector, all elements of the vector are delayed by the same sample period.

### Dialog box

- initial condition
  The output of the simulation for the first sampling period, during which the output of the Unit Delay block is otherwise undefined.
  Properties : Type 'mat' of size [-1,-2].

- Inherit (no:0, yes:1)
  When "Inherit" is yes, the block inherit its event input.
  Properties : Type 'vec' of size -1.

### Default properties

- always active: no
- direct-feedthrough: no
- zero-crossing: no
- mode: no
- regular inputs:
  - port 1 : size [1,1] / type 1
- regular outputs:
  - port 1 : size [1,1] / type 1
- number/sizes of activation inputs: 1
- number/sizes of activation outputs: 0
- continuous-time state: no
- discrete-time state: yes
- object discrete-time state: no
- name of computational function: dollar4

### Interfacing function

- SCI/macros/scicos_blocks/Linear/DOLLAR.sci [view code]

### Computational function

- SCI/routines/scicos/dollar4.c (Type 4) [view code]