Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:

iF SOCIAL IMPACT PRIZE (free of charge)

Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

calculator pen / Calculator

calculator pen
calculator pen

When we are keeping accounts, we usually use a pen and calculator simultaneously. However, inputting the wrong number can cause errors, forcing us to start our calculations all over. Pen-Calculator combines the idea of a calculator and pen. As you write your calculations on paper, it keeps track of the numbers and operators such as addition, subtraction, multiplication, and division. After you write an equal sign, it then shows you the answer on the screen.

University

National Cheng Kung University

National Cheng Kung University
TAINAN, Taiwan

Design

National Cheng Kung University

National Cheng Kung University
Kaohsiung, Taiwan

Chen,Xin-An Shih,Chun-Yu