Homework on EVM

Ethereum 101
#722
  1. What does the EVM do?

EVM reads instructions from a Smart Contract and then pass it on to CPU for execution. Allows all nodes/computers on the network to use the computers CPU but only under parameters set by the code in a smart contract

  1. What is the format of the instructions that the EVM can read?

Byte Code

  1. What is the relationship between the programming language Solidity and Bytecode?

Solidity is the language you program the smart contracts in this code is then converted into byte code using a special application called a compiler

  1. Why can’t Bitcoin run the same type of complex programs like Ethereum can?

Because the programming language used by BTC is Script and it is not turing complete

  1. What is a Turing Complete programming language?

A language that allows loops and in theory anything you can think of can be done

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#723

  1. EVM enables or executes codes on the network nodes.

  2. It reads smart contracts then then tells the CPU what to do.

  3. They are both Smart contracts.

  4. Because it’s not Turing complete.

  5. Loops

#724

Ethereum network and can read and executes smart contracts.

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#725

  1. The EVM is the middleman between the smart contract and the CPU. It reads the instructions from the contract and interacts with the CPU to execute. It is also a security measure so that your CPU is not accessed directly.

  2. Bytecode.

  3. Solidity is a language that is used to program in Ethereum. The language is translated into bytecode because that is what the EVM reads.

  4. The script language itself is very limited. It is not Turing complete. It was also designed to be limited because bitcoin was to be nothing more than a digital asset.

  5. A Turing Complete programming language is a language that can be programmed with full functionality and can solve any computational problem (and run loops).

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#726
  1. What does the EVM do?
    EVM reads smart contracts and gives directions to CPU what to do. Also protects CPU from direct access.
  2. What is the format of the instructions that the EVM can read?
    Bytecode
  3. What is the relationship between the programming language Solidity and Bytecode?
    Programmers write smart contracts in Solidity and EVM translates it to bytecode
  4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
    Bitcoin uses a simple programing language called Script which can only do primitive smart contracts. It was done not to overwhelm the Bitcoin blockchain and use bitcoin mainly as a store of value.
  5. What is a Turing Complete programming language?
    Thats a language in which you can program anything you can think of.
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#727

  1. What does the EVM do?
    The Ethereum Virtual Machine reads the Bytecode of Smart Contracts. It also prevents the CPU from having to execute the code which could be harmful to a computer.

  2. What is the format of the instructions that the EVM can read?
    The instructions of a smart contract are written in Bytecode

  3. What is the relationship between the programming language Solidity and Bytecode?
    Programmers write their smart contracts in Solidity which is then compiled into Bytecode

  4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
    The Bitcoin language Script is not Turing complete which means it cannot process loops. Solidity on the other hand is Turing complete.

  5. What is a Turing Complete programming language?
    A Turing complete language can solve any complex computational problem

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#728

[1] What does the EVM do?
The Ethereum Virtual Machine (EVM) runs the code in Smart Contracts.

[2] What is the format of the instructions that the EVM can read?
It can read the Solidity format of instructions.

[3] What is the relationship between the programming language Solidity and Bytecode?
Solidity code is a high level language and after being converted to an intermediate language called Bytecode, it is executed by the EVM.

[4] Why can’t Bitcoin run the same type of complex programs like Ethereum can?
Because it cannot do loops in its scripting language, or in other words it is not Turing Complete.

[5] What is a Turing Complete programming language?
It is a computer language that can handle doing loops in the code.

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#729

The EVM is a virtual processor that executes operations.
Basicall you can say it is a computer that executes programms.

The EVM (like any CPU) understands a basic set of OP-Codes. This means the EVM does not understand the sourcecode itself. You need to compile it to these OP-Codes (basically you translate the code from one language to another). The format the OP-Codes are stored is called Bytecode.

Solidity and Bytecode are both programming-languages, but each on a different abstaction level.
Solidity has a higher abstraction level meaning that it is easier to understand and create programs with, because basically you don’t care about each and every detail and can focus more on what your programs needs to do and not how it is executed in detail.

Solidity needs to be compiled to Bytecode. This means that you need a compiler to translate it to Bytecode. Depending on the compiler the Bytecode can be different and more or less efficient.

Simply because the bitcoin community decided not to do so.
The decision was to NOT allow turing complete applications to run in bitcoin.
This reduces complexity and strengthens the security.

A turing complete language is any language that can simulate a turing machine. Basically it means that you can do anything you want with it. Any turing complete language is able to simulate any other turing complete programming language.
One of the most important properties of a turing complete language is that it has “conditional branching” meaning the program can somehow evaluate a condition and therefore change it’s execution behaviour.
Almost all existing programming languages are turing-complete.

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#730

  1. What does the EVM do?
    Ethereum Virtual Machine is the security for a smart contract i.e. it interprets the instruction and then distributes to all the nodes in the network. The EVM will execute the Smart Contract once the rules have been met.

  2. What is the format of the instructions that the EVM can read?
    The format is Bytecode.

  3. What is the relationship between the programming language Solidity and Bytecode?
    A programmer can give instructions in plain English to Solidity which then converts to a Bytecode instruction which is then read by EVM.

  4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
    Mainly due to Bitcoin being Turing Incomplete which means that it cannot solve all problems. Bitcoin would be limited in how many Smart Contracts it could execute and currently can only solve a multi signature contract which means that certain signatories need to be in consensus before a transaction can be completed. Therefore Smart Contracts cannot be executed via Bitcoin and is the reason for the existence of Ethhereum.

  5. What is a Turing Complete programming language?
    Turing Complete means that any problem can be solved by the programme.

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#731
  1. EVM instructs your competr what to do in terms of the smart contract
  2. EVM format is bytecode
  3. Solidity reads the bytecode and carries out the instructions
  4. Its limited as it can only allow simple multi signature instructions and its not turing complete, meaning you cannot solve any kind of problem.
  5. Turing complete language means that yoiu can solve any kind of problem with a turing complete language
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#732

  1. What does the EVM do?
    Ethereum virtual machine. The EVM reads the byte code and executes the smart contract on the cpu. It also distribute to all nodes in the network.

  2. What is the format of the instructions that the EVM can read?
    Bytecode

  3. What is the relationship between the programming language Solidity and Bytecode?
    You can program the Smart Contract with viper or solidity it is then changed to bytecode so EVM can read it and execute.

  4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
    Bitcoin is a turning incomplete program it can not solve problems or loop contracts. Smart contracts can not be executed on bitcoin blockchain only multiple signatures. Thats why ethereum exist.

  5. What is a Turing Complete programming language?
    Solidity or viper is a turning complete program which enables you to program any smart contract you please. It has a “conditional branching” meaning it can evaluate a condition and change its execution.

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#733

1.) The EVM runs over the CPU of an ethereum node and reads and, using the resources of the CPU, executes smart contracts.

2.) The format of the instructions that EVM can read is called Bytecode

3.) The relationship between the programming language Solidity and Bytecode is such that a smart contract is written out with Solidity and Solidity translates that into Bytecode so that the EVM can read and understand.

4.) Bitcoin can not run the same programs as Ethereum because it is not Turing Complete and there is the potential for the network to be spammed and thus, congested.

5.) A Turing Complete programming language does not limit the programmer in any way. Therefore, smart contracts are possible in which a programmer can set up the parameters of an agreement and the conditions of the execution of the contract.

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#734
  1. EVM is reading the bytecode and giving instructions on how to execute the program/smart contract to the CPU.
  2. Bytecode
  3. The smart contract is written in solidity, which is a programming language. EVM is converting it into bytecode.
  4. Bitcoin script is no turing complete, it’s limited and therefore cannot solve all problems like Ethereum can.
  5. Solidity and Viper are turing complete languages, which can solve any problem and execute various operations including loops.
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#735
  1. a) can read an execute smart contracts b) security
  2. bytecode
  3. the EVM cant understand solidity. has to translate to bytecode with compiler
  4. BTC has limits and has no loop function
  5. gives the ability to create any application you can think of
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#736
  1. EVM is a piece of code that the network runs where it can read and execute smart contracts.
  2. Bytecode
  3. You program the instructions with Solidity then the complier takes that information and compiles it down to bytecode so the EVM can read it and execute the smart contract.
  4. Bitcoin script language is not Turing complete meaning it cannot solve all problems
  5. Turing complete allows the software create clear loops—you can tell the software to do one thing multiple times
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#737

  1. What does the EVM do?
    Ethereum virtual machine reads the smart contrac in byte code and later tells the CPU what to do.

  2. What is the format of the instructions that the EVM can read?
    Byte code.

  3. What is the relationship between the programming language Solidity and Bytecode?
    To get the byte code programmers uses solidity

  4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
    Bitcoins is running on script which is not turing complete, so it can only do simple tasks. ETH is running on Solidity= Turning complete. In theory you can program anything on it.

  5. What is a Turing Complete programming language?
    Turing complete programming language is a programming language that anyone can write whatever program they want on it. It allows anyone to make a programming language from scratch.

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#738
  1. An EVM reads and executes smart contracts. It also provides security (for CPU/node).
  2. Bytecode
  3. Solidity is one of the programming languages used to read the bytecode.
  4. Bitcoin uses Script which is not a Turing Complete programming language.
  5. A Turing Complete programming language has Loops which enables to write any type of complex programs.
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#739
  1. The EVM executes smart contracts which can be Turing complete programs.
  2. The EVM understands Bytecode, which can be obtained by compiling solidity.
  3. Solidity is the language of the source code, Bytecode is the EVM machine language.
  4. It is a Bitcoin design choice not to allow complex programs, only very basic ones.
  5. A Turing complete language allows one to write any conceivable program, including with loops.
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#740
  1. The EVM is an application running on all nodes and it read and exectutes small contracts.
  2. EVM can read BYTE CODE format.
  3. A compiler (special application) will compile bytes instructions and give to solidity.
  4. Bitcoin script language is not turing complete, can’t solve all the problems and is very limited
  5. TC gives many options like loops which a feature of a programming language that allows to do one thing several times.
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#741
  1. EVMs process and execute the smart contracts on the CPU and act as a security measure to prevent malicious activity which would compromise the network.
  2. bytecode which is compiled from Solidity or Viper.
  3. Solidity code is compiled down to byte code so EVMs can process the instructions.
  4. Turing complete programming language is a dynamic programming language where you can program any task with the inclusion of loops to achieve desired result.
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