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Carry-Looker Adder Delay Formula

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Carry-Looker Adder Delay computes group generate signals as well as group propagates signals to avoid waiting for a ripple to determine if the first group generates a carry. Check FAQs

t cla = t pg + t gp + ((n - 1) + (K - 1)) \cdot T ao + T xor

t_cla - Carry-Looker Adder Delay?t_pg - Propagation Delay?t_gp - Group Propagation Delay?n - N-Input AND Gate?K - K-Input AND Gate?T_ao - AND-OR Gate Delay?T_xor - XOR Delay?

Carry-Looker Adder Delay Example

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Here is how the Carry-Looker Adder Delay equation looks like with Values.

Here is how the Carry-Looker Adder Delay equation looks like with Units.

Here is how the Carry-Looker Adder Delay equation looks like.

29.35 = 8.01 + 5.5 + ((2 - 1) + (7 - 1)) \cdot 2.05 + 1.49

29.35ns = 8.01ns + 5.5ns + ((2 - 1) + (7 - 1)) \cdot 2.05ns + 1.49ns

29.35 = 8.01 + 5.5 + ((2 - 1) + (7 - 1)) \cdot 2.05 + 1.49

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Carry-Looker Adder Delay Solution

Follow our step by step solution on how to calculate Carry-Looker Adder Delay?

FIRST Step Consider the formula

t cla = t pg + t gp + ((n - 1) + (K - 1)) \cdot T ao + T xor

Next Step Substitute values of Variables

∴

t cla = 8.01ns + 5.5ns + ((2 - 1) + (7 - 1)) \cdot 2.05ns + 1.49ns

Next Step Convert Units

∴

t cla = 8E-9s + 5.5E-9s + ((2 - 1) + (7 - 1)) \cdot 2.1E-9s + 1.5E-9s

Next Step Prepare to Evaluate

∴

t cla = 8E-9 + 5.5E-9 + ((2 - 1) + (7 - 1)) \cdot 2.1E-9 + 1.5E-9

Next Step Evaluate

∴

t cla = 2.935E-08s

LAST Step Convert to Output's Unit

∴

t cla = 29.35ns

Carry-Looker Adder Delay Formula Elements

Variables

Carry-Looker Adder Delay

Carry-Looker Adder Delay computes group generate signals as well as group propagates signals to avoid waiting for a ripple to determine if the first group generates a carry.

Symbol: t_cla

Measurement: TimeUnit: ns

Note: Value should be greater than 0.

Formulas to find Carry-Looker Adder Delay

Propagation Delay

Propagation delay typically refers to the rise time or fall time in logic gates. This is the time it takes for a logic gate to change its output state based on a change in the input state.

Symbol: t_pg

Measurement: TimeUnit: ns

Note: Value should be greater than 0.

Formulas to find Propagation Delay

Group Propagation Delay

Group Propagation Delay is a device performance property that helps to characterize time delay.

Symbol: t_gp

Measurement: TimeUnit: ns

Note: Value should be greater than 0.

Formulas to find Group Propagation Delay

N-Input AND Gate

N-input AND gate is defined as the number of inputs in the AND logic gate for the desirable output.

Symbol: n

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find N-Input AND Gate

K-Input AND Gate

K-input AND gate is defined as the kth input in the AND gate among the logical gates.

Symbol: K

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find K-Input AND Gate

AND-OR Gate Delay

AND-OR Gate Delay in the gray cell is defined as the delay in the computing time in AND/OR gate when logic is passed through it.

Symbol: T_ao

Measurement: TimeUnit: ns

Note: Value should be greater than 0.

Formulas to find AND-OR Gate Delay

XOR Delay

XOR Delay is the propagation delay of XOR gate.

Symbol: T_xor

Measurement: TimeUnit: ns

Note: Value should be greater than 0.

Formulas to find XOR Delay

Credits

Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

Shobhit Dimri has created this Formula and 900+ more formulas!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Formula and 1900+ more formulas!

Other formulas in Array Datapath Subsystem category

Go Ground Capacitance

C gnd = (\frac{V agr \cdot C adj}{V tm}) - C adj

Go Carry-Ripple Adder Critical Path Delay

T ripple = t pg + (N gates - 1) \cdot T ao + T xor

How to Evaluate Carry-Looker Adder Delay?

Carry-Looker Adder Delay evaluator uses Carry-Looker Adder Delay = Propagation Delay+Group Propagation Delay+((N-Input AND Gate-1)+(K-Input AND Gate-1))*AND-OR Gate Delay+XOR Delay to evaluate the Carry-Looker Adder Delay, The Carry-Looker Adder delay formula is defined as similar to the carry-skip adder, but computes group generate signals as well as group propagate signals to avoid waiting for a ripple to determine if the first group generates a carry. Carry-Looker Adder Delay is denoted by t_cla symbol.

How to evaluate Carry-Looker Adder Delay using this online evaluator? To use this online evaluator for Carry-Looker Adder Delay, enter Propagation Delay (t_pg), Group Propagation Delay (t_gp), N-Input AND Gate (n), K-Input AND Gate (K), AND-OR Gate Delay (T_ao) & XOR Delay (T_xor) and hit the calculate button.

FAQs on Carry-Looker Adder Delay

What is the formula to find Carry-Looker Adder Delay?

The formula of Carry-Looker Adder Delay is expressed as Carry-Looker Adder Delay = Propagation Delay+Group Propagation Delay+((N-Input AND Gate-1)+(K-Input AND Gate-1))*AND-OR Gate Delay+XOR Delay. Here is an example- 2.9E+10 = 8.01E-09+5.5E-09+((2-1)+(7-1))*2.05E-09+1.49E-09.

How to calculate Carry-Looker Adder Delay?

With Propagation Delay (t_pg), Group Propagation Delay (t_gp), N-Input AND Gate (n), K-Input AND Gate (K), AND-OR Gate Delay (T_ao) & XOR Delay (T_xor) we can find Carry-Looker Adder Delay using the formula - Carry-Looker Adder Delay = Propagation Delay+Group Propagation Delay+((N-Input AND Gate-1)+(K-Input AND Gate-1))*AND-OR Gate Delay+XOR Delay.

Can the Carry-Looker Adder Delay be negative?

No, the Carry-Looker Adder Delay, measured in Time cannot be negative.

Which unit is used to measure Carry-Looker Adder Delay?

Carry-Looker Adder Delay is usually measured using the Nanosecond[ns] for Time. Second[ns], Millisecond[ns], Microsecond[ns] are the few other units in which Carry-Looker Adder Delay can be measured.

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Carry-Looker Adder Delay Formula

Carry-Looker Adder Delay Example

Carry-Looker Adder Delay Solution

Carry-Looker Adder Delay Formula Elements

Credits

Other formulas in Array Datapath Subsystem category

How to Evaluate Carry-Looker Adder Delay?

FAQs on Carry-Looker Adder Delay

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