Basic Arithmetic Calculator Design

I am looking for a developer who can create a simple arithmetic calculator. The calculator should be able to perform only addition operations and be operated via button clicks. I already done for half only need help on the latch section


Key Requirements:
- Design and development of a basic arithmetic calculator
- Implement addition functionality exclusively
- User interaction through button clicks

Ideal Skillset:
- Proficiency in relevant programming languages
- Experience in designing user-friendly interfaces
- Strong understanding of basic arithmetic operations