Abstract: A negative electrode active material for a lithium secondary battery which includes first negative electrode active material particles including artificial graphite particles and a carbon coating layer formed on the artificial graphite particle; and second negative electrode active material particles including natural graphite particles, wherein the first negative electrode active material particles have a larger average particle diameter (D50) than an average particle diameter (D50) of the second negative electrode active material particles, and a weight ratio of the first negative electrode active material particles and the second negative electrode active material particles is in a range of 70:30 to 95:5.

Abstract: A digital desk includes a transparent display unit provided between a counselor and a customer, and a control unit configured to control an image displayed on the transparent display unit based on information on presence or absence of the counselor.

Abstract: A digital module built-in desk to be placed at a location where business transactions between a clerk and a customer are performed is provided. The desk includes a desk body including an upper plate having a customer-side desk portion providing a space for the customer; a customer digital module mounted in the customer-side desk portion, the customer digital module including a tablet through which information necessary for the business transactions is inputted; and a clerk digital module provided in the side of the clerk-side desk portion, the clerk digital module including a monitor for displaying information necessary for the business transactions.

Abstract: A portable transaction module to be placed at a space where business transactions between a teller and a customer are performed is provided. The portable transaction module includes a portable unit, and a customer-side digital module unit, for inputting information necessary for the business transactions, mounted at one side of the portable unit.