They run in Ethereum and the computers of the world's rich world, so anyone can access them, and with early computer programs it can't really exchange with each other.
can computers run with electrum instead of gold

Johnwick.io found that hackers launched a denial-of-service (DoS) attack on a well-known wallet, Electrum server. Hackers used a botnet of more than 140,000 computers to attack Electrum's nodes and simultaneously deployed malicious nodes. When a user connects to these malicious nodes and sends a transaction using an older version of Electrum, the user is prompted to update the Backdoor Client. If the user installs the client as prompted, the private key is stolen and all digital assets are lost. Millions of dollars of digital currency have been stolen, according to Electrum officials. Devi Security Labs recommends that users of Electrum Wallet update to the latest version of the client via the official website and never use the link in the prompt message.
Instead of PoC mining with calculation at its core, ordinary home computers are fully supportive.

Community members cannot run verification nodes and can only run lightweight nodes instead
2020.05.22: Add Google Colab mode so users can run Avatarify on computers without a GPU.
OS computers, to a small number of computers with actually installed Linux distributions, will run the Linux kernel and Linux software on almost any computer of your choice. Mac computers won't, but it's based on Unix-like BSD systems that already run many Linux applications relatively easily (so Apple systems are popular among developers)
Vitalik begins with an introduction to the origins of blockchain and Ethereum. Blockchain, he says, is a distributed network of different computers that can store data and run calculations in a fault-tolerance way, allowing many, many different computers to agree on data (i.e., transactions).
Bitcoin Wallet Electrum confirms a phishing attack against its users, reminding them not to download Electrum Wallet software from any channel other than the official website. Earlier media reports said Electrum users had maliciously stolen millions of dollars worth of cryptocurrencies. Hackers create Electrum wallet software with malicious code, induce users to download, and trick users into providing login information such as passwords to commit theft.
With the latest architecture, and it can run on everything you know, including computers, mobile phones, tablets, smart home devices, and more.
The world market also provides investors with the opportunity to participate in the gold bar market through the acquisition of digital gold. With digital holding, investors can buy and sell gold anytime, anywhere, without actually receiving physical objects, and instead have access to a digital asset with actual gold support that can be sold almost immediately without penalty. In addition, investors can request the shipment of purchased gold.
When an Electrum wallet queries a third-party Electrum server, the server can link two transactions together and know which address is a zero address.
With the new system, participants will run nodes instead of sending messages, and nodes will connect to the entire database instead of having many different databases, which will help eliminate errors. However, customers who do not want to run the node can still receive messages in a manner similar to today's.
Bitcoin Gold has released the official Light Wallet ElectrumG 3.2.1, which supports Windows, Mac, and Linux desktop systems. ElectrumG is the most widely used bitcoin light wallet, the bit gold version of Electrum, without losing security or downloading all 170G block data.