# 2. Deploying Smart Contract
You can use Remix Online IDE or use Truffle to deploy `MyERC20` smart contract.
## 2.1 Deploying smart contract using Remix Online IDE
* Please visit [Klaytn Plugin for Remix](https://ide.klaytn.foundation) and create a `MyERC20` contract. The complete source code was given at [Writing ERC-20 Smart Contract](/content/smart-contract/sample-contracts/erc-20/1-erc20.md).
* Prepare your account which will be used to deploy the contract.
* If you do not have an account yet, create one at or .
* Get some test KLAY from the faucet -
* Let's deploy `MyERC20.sol` with the deploy parameters of `BAOBABTOKEN`, `BAO` and `8`.
After deploying, you can invoke `balanceOf` with your account, which was used to deploy the contract. You will find there are `10000000000000` tokens available in your account as below. Because you set `decimal` as `8` when deploying the contract above, it minted a fixed number of `100000` tokens in the constructor, with one token having a decimal value of `10^8`. `totalSupply` method will return the total supply of tokens minted which should be also `10000000000000`.
`MyERC20` is now live !
## 2.2 Deploying smart contract using truffle
You should have installed [node.js](https://nodejs.org/) in your environment. Please take a look at [Installing Node.js via package manager](https://nodejs.org/en/download/package-manager/) to install node.js using package manager in various environment.
```
$ mkdir klaytn
$ cd klaytn
$ npm init # initialize npm at the erc20token directory
$ npm install truffle@4.1.15
$ npm install caver-js@latest # installing caver-js
$ ln -s node_modules/truffle/build/cli.bundled.js truffle
$ export PATH=`pwd`:$PATH
```
Now you have installed truffle and caver-js which are required to deploy smart contract.
Let's prepare `truffle` and a smart contract `MyERC20.sol`.
```
$ mkdir myerc20
$ cd myerc20
$ truffle init
```
Now you will have following directory structures.
```
.
├── contracts
│ ├── Migrations.sol
├── migrations
│ └── 1_initial_migration.js
└── truffle-config.js
```
Now write `MyERC20.sol` and locate it to `contracts` directory.
Also edit `1_initial_migration.js` as below to deploys `MyERC20` contract with initial parameters of `BAOBABTOKEN`, `BAO` and `8`. The token name is set to `BAOBABTOKEN` and the token symbol to `BAO`. Token has decimal value `10^8`. Note that when you query the `totalSupply` of `BAOBABTOKEN` for example, it returns `10^13`, not `10^5`, because solidity does not support floating point, the number of tokens always represented as a natural number in the smallest denomination.
```javascript
const Migrations = artifacts.require("./Migrations.sol");
const MyERC20 = artifacts.require("./MyERC20.sol");
module.exports = function(deployer) {
deployer.deploy(Migrations);
deployer.deploy(MyERC20, 'BAOBABTOKEN', 'BAO', 8);
};
```
You also have to edit `truffle-config.js` as shown below to deploy a smart contract to Klaytn network. This is the same step described in [Deploying a Smart Contract using Truffle](/content/getting-started/quick-start/deploy-a-smart-contract.md#deploying-a-smart-contract-using-truffle).
```
// truffle-config.js
module.exports = {
networks: {
baobab: {
host: '127.0.0.1',
port: 8551,
from: '0xabcdabcdabcdabcdabcdabcdabcdabcdabcdabcd', // enter your account address
network_id: '1001', // Baobab network id
gas: 20000000, // transaction gas limit
gasPrice: 250000000000, // gasPrice of Baobab is 250 ston
},
},
compilers: {
solc: {
version: "0.5.12" // Specify compiler's version to 0.5.12
}
}
};
```
Now you are all ready and can deploy `MyERC20.sol` as below.
```
$ truffle deploy --network baobab --reset
Compiling ./contracts/MyERC20.sol...
Writing artifacts to ./build/contracts
Using network 'baobab'.
Running migration: 1_initial_migration.js
Replacing Migrations...
... 0x5a947f076f4570dff8ff18b1ae3557e27dd69c92ce38a3c97fad8f5355914066
Migrations: 0x0d737e9865e5fc4c1ff53744fd2c13c52a44b9bc
Deploying MyERC20...
... 0x1571e80552dab1d67260e8914e06d9b16ccae16fb698c750f6a09aab12517bc1
MyERC20: 0xc4c8257ED9B4eB6422fDe29B1eCe5Ce301e637e1
Saving successful migration to network...
... 0x5b984b3f79c425d80470a96d5badb857fc05e7f31d94423044ae3119c639aa77
Saving artifacts...
```
It shows that the transaction hash for deploying `MyERC20` is `0x1571e80552dab1d67260e8914e06d9b16ccae16fb698c750f6a09aab12517bc1` and the address of `MyERC20` is `0xc4c8257ED9B4eB6422fDe29B1eCe5Ce301e637e1`.
Now `MyERC20` is live !
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