Homework on EVM

Ethereum 101
#601

  1. The EVM instructs the cpu of the host machine to carry out the instructions contained in the smart contract.

  2. Byte code.

  3. Solidity is an interface language between the programmer and byte code.

  4. Bitcoin is coded in Script which is not Turing complete which means that its funstions are linited.

  5. A Turing complete programming language is one that has limitless logical possibilities. It also has loops which enable a single function to be repeated many times without the need to write each instance of the function.

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#602
  1. EVM is stored on every node in Ethereum network and it is used to read the code of smart contracts and then it gives instructions to the CPU what to execute.
  2. Bytecode
  3. Solidity is a programing language which is turing complete so it allows people to build anything they want. Solidity then converts that into Bytecode so EVM could read it.
  4. Because bitcoin’s script is not turing complete.
  5. It basically means that everything can be done inside that programming language. It has unlimited possibilities. It also has loops which means that a given function can be executed over and over without writing it all over again.
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#603

  1. Eth has another layer to it called EVM that allows us to deploy code on this network in such a way that we are all in consensus about what the result should be. We now have a transparent unstoppable application that can handle money. EVM is a piece of code that all computers are also running, it runs on top of the existing hardware of each node, it can read and execute smart contracts. EVM reads the smart contract in Solidity, converts it to EVM bytecode and the CPU helps indirectly in the execution.

  2. Bytecode

  3. Eths language is Solidity, there is a compiler that takes the code in Solidity and puts it into bytecode that EVM can read.

  4. BTC already has a programming language called script, you can do a multisig wallet enabling two people to have to sign a transaction for it to go through from the wallet but it is very limited. We call this not Turing complete( it cannot solve all problems it might have to and is very limited). Solidity in Eth is Turing complete, you can program anything into it, and has something called loops, it allows you to tell software to do something several times, without loops you have to write all instructions by hand which might not be possible. BTC developers didn’t want the network to get spammed, increase the blockchain size, BTC should be digital money and nothing else.

  5. A language that can be programmed to do anything in theory possible.

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#604

  1. EVM is short for the Ethereum Virtual Machine and is used to read and execute code on the Ethereum blockchain.

  2. EVM can read Bytecode.

  3. Solidity is programming language used to write smart contracts. When compiled, the information is represented in Bytecode which can be read by the EVM.

  4. Bitcoin programming language (script) is not turing complete.

  5. A turing complete programming language is one which does not have fundamental limitations to the code which can be executed in the programming language.

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#605
  1. It is a connector between smart contracts and CPU on the node. It executes the smart contract bytecode.
  2. EVM reads byte code.
  3. Solidity is human readable. In order to become bytecode it needs to be compiled.
  4. Because SCRIPT is not turing complete language.
  5. It’s a programming language capable of executing code in order set by the programmer (not only top-down), which basically means it has something like ‘goto’ procedure.
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#606
  1. What does the EVM do? Etherium Virtual Machine system on the nodes, reads and executes the smart contracts.
  2. What is the format of the instructions that the EVM can read? The EVM bytecode
  3. What is the relationship between the programming language Solidity and Bytecode?
    When we compile the solidity code using the compiler, it will translate our code into bytecode, something only the EVM can understand.
  4. Why can’t Bitcoin run the same type of complex programs like Ethereum can? BTC is too primative and can only have limited instructions which keeps if perfect for digital gold as was an original intent of value.
  5. What is a Turing Complete programming language? A Turing complete programming language allows you to program whatever you want without limitations.
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#607

Ethereum virtual machine reads and executes smart contracts
EVM reads bytecode
Solidity is the language smart contracts are written and tured to bytecode which EVM reads
Bitcoin is not turing complete
Turing complete means you can program anything you want

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#608

What does the EVM do?

  • The EVM is a piece of code that every node is running, separately. It reads the instructions of a smart contract and eventually ‘says’ to CPU to run some actions, depending on the instructions written in smart contract. Moreover it does not allow to interact directly blockchain with Cpu, acting like a filter

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

  • EVM reads instructions in byte code, so you can write in Solidity, or in Viper, but you’ll need to compile in byte code

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

  • Bytecode is the language read by EVM, Solidity is the language used for smart contracts programming, you have to compile solidity language into bytecode to allow EVM to read it

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

  • Because Bitcoin is not a Turing complete language so can only operate with limited instructions

What is a Turing Complete programming language?

  • A Turing Complete programming language is a language that allows to create every kind of operation or protocol
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#609

  1. EVM is the Ethereum Virtual Machine that runs on top of nodes to read and execute smart contracts.

  2. EVM’s can read byte codes

  3. Solidity is a programming language that is converted into byte code through Compiler for EVM’s to execute.

  4. Bitcoin is an application of blockchain that only runs simple languages such as script and not capable of complex 2nd layer solutions.

  5. Turing Complete programming language is a system where a code can be written to solve a complex problem.

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#610
  1. The EVM executes the smart contract codes on each node on the Ethereum network which in turn enables consesus to be reach by the nodes regarding the result. The EVM simultaneously protects the underlying computer and thus the network from potential malicious code by encapsulating the code execution to within the EVM
  2. The EVM reads Bytcode
  3. A compiler translates /converts Solidity into ByteCode
  4. Bitcoin code language is not Turin complete e.g. it does not have a Loop syntax
  5. A Turin complete language Is a programming language that allows the coding of all required programming scenarios
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#611

  1. What does the EVM do?
    Ethereum Virtual Machine is an application running on all the nodes to read and execute smart contracts and give instructions to the CPU.

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

  3. What is the relationship between the programming language Solidity and Bytecode?
    Solidity is converted into bytecode through a Compiler so that EVM can read it.

  4. Why can’t Bitcoin run the same type of complex programs like Ethereum can?
    Bitcoin is not a Turing complete language while Ethereum is a Turing complete language.

  5. What is a Turing Complete programming language?
    A Turing complete language allows you to do everything in the programming language. For instance, it has Loops where you can execute one instruction several times.

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#612

  1. Ethereum virtual machine(EVM) is an application running on all the nodes and makes it possible for us to execute codes on the Ethereum network in such a way that everyone reaches consensus about what a result should be. It executes the smart contract and then gives instructions to the CPU.

  2. The EVM read instructions that are in BYTECODE.

  3. Solidity is a programming language that is converted into bytecode through a compiler.
    Therefore bytecodes are generated from solidity.

  4. Bitcoin can’t run the same type of complex programs like Ethereum because the programming language of bitcoin ( Script ) is not Turing complete.

  5. A Turing complete language is a language that can solve any computational program provided it is given enough time and memory. With a Turing complete language, a developer can program anything he or she wants.

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#613

An EVM (Ethereum virtual machine) is a virtual machine that run on all computers of the ethereum network and needs execute smart contracts, being sandboxed like a standard virtual machine it has the security that the pc of each node(network) cannot be compromise.

The format of the instructions must be in Bytecode

Solidity is the main programming language used for Ethereum smart contract , once programmed in Solidity you have to use a compiler that translate your smart contract instructions into bytecode so that can be read from the EVM

Cause use a not Turing Complete programming language called “Script” which can be used just to make basic smart contracts.

Is a programming language that allow you to do whatever you want (in theory , but then there are others factor to keep in mind like for example the scalability of the blockchain where you are programming smart contract) , for example Solidity in Ethereum allows you also to do Loops which means that an instruction could be repeat automatically for X number of times without having to re-write the same instruction in the code the same number of times you want it to be repeated.

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#614

Q1: The EVM reads smart contracts and sends this info to CPUs to execute.

Q2: Bytecode

Q3: Solidity is the language used to create smart contracts, from there this code is compiled into Byte code for the EVM can read then it sends it to CPUs to execute.

Q4: BTC was programmed using script which does not allow for loops.

Q5: TC language is one that has the ability to create loops allowing for smart contracts and other features to be added on top of ETH.

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#615

  1. It creates the environment for the smart contact to run. It is a powerful, sandboxed virtual stack embedded within each full Ethereum node, responsible for executing contract bytecode. … Every node in the Ethereum network runs an EVM instance which allows them to agree on executing the same instructions.

  2. The EVM uses a set of instructions called opcodes to execute specific tasks.

  3. Solidity is a statically-typed programming language designed for developing smart contracts that run on the EVM. Solidity is compiled to bytecode that is executable on the EVM.

  4. BTC’s programming language, script, does not support “loops” as ETH’s programming language , solidity, does. These loops make it programmer friendly and easy to build with.

  5. One that can be used to solve any computation problem, not matter how long it would take.

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#616

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

Completely right sir, but the format of those opcodes instructions are known as ByteCode.

If you have any doubt, please let us know so we can help you! :slight_smile:

Carlos Z.

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#617

  1. Ethereum Virtual Machine (EVM) is what executes the smart contract instead of the CPU. It provides a layer of security on the CPU, protecting it from malicious smart contracts.

  2. The EVM reads solidity. Typically the smart contract consists of a list of commands that the EVM reads.

  3. The smart contract is programmed in Solidity but is converted to EVM Bytecode by a compiler.

  4. Bitcoin is not turing complete. Some simple additions can be added to bitcoin such as multi-sig but not nearly as many as Ethereum.

  5. Turing complete is a programming language that can, in theory, have infinite possibilities programmed into it. If a programmer can think of something, it can be programmed on Ethereum.

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#618
  1. Its a peace of code that runs on the nodes, reads and executes smart contracts.
  2. bytecode
  3. instructions and logic in solidity are compiled and sent to bytecode
  4. Script can only handle very primitive contracts. where as in solidity you are able to program anything you can think about.
  5. solidity is turing complete programming language.
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#619
  1. An EVM or Ethereum Virtual machine runs on top of a CPU and interprets Bytecode and follows instructions of smart contracts. They tie the Ethereum nodes and blockchain together.
  2. EVMs can read Bytecode.
  3. Solidity can be written in a programming language similar to english, then solidity outputs instructions in Bytecode for the EVM to follow.
  4. Bitcoins programming language is not Turning complete. Only simple code and instructions like multisig. Ethereums programming language is Turing complete and can allow for complex smart contracts to be executed on its blockchain.
  5. A language that allows complex instructions and smart contracts to be built on top of it.
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#620

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

Hello sir, sorry but the EVM does not read Solidity, the format of the instructions that EVM read is ByteCode, Solidity is the programming language that you will use to design/create/write an smart contract and then compile it to ByteCode so the EVM can read all the instructions that the smart contract has been program to do.

Hope this gives you a clear view of the subject, keep learning! :slight_smile:
If you have any doubt, please let us know so we can help you!

Carlos Z.