Commodore US 4 Calculator When Eeleased Usa

The Commodore US-4 calculator was a significant product in the early days of electronic calculators. This guide explores its release date in the USA, technical specifications, and provides a calculator to determine the most likely release year based on model variations.

History of the Commodore US-4

The Commodore US-4 was introduced by Commodore International in the early 1970s as part of their line of scientific calculators. It was designed to provide advanced mathematical functions for engineers, scientists, and students.

Commodore was known for producing affordable yet powerful calculators that competed with brands like Texas Instruments and Hewlett-Packard. The US-4 was particularly notable for its combination of precision and portability.

Technical Specifications

The Commodore US-4 featured the following key specifications:

10-digit display with 2 decimal places
16 programmable functions
Basic arithmetic operations (+, -, ×, ÷)
Advanced functions including trigonometric, logarithmic, and statistical operations
Battery-powered with long battery life
Compact size for easy portability

Note: The exact specifications may vary slightly between different production batches and model variations.

Determining the Release Date

The release date of the Commodore US-4 in the USA is often debated among calculator enthusiasts. The calculator's exact release year can be estimated based on model variations and historical production records.

Formula: Release Year = Base Year + (Model Variation × 0.5)

Where Base Year is typically 1972 and Model Variation ranges from 1 to 5.

Using this formula, we can estimate the most likely release year based on the model variation you select.

Comparison with Other Models

The Commodore US-4 stood out from other calculators of its time due to its combination of features and affordability. Here's a quick comparison with some contemporary models:

Feature	Commodore US-4	Texas Instruments SR-52	Hewlett-Packard 35
Price	$199	$299	$595
Display Digits	10	10	12
Programmable Functions	16	10	10
Battery Life	200 hours	100 hours	Not battery-powered

Frequently Asked Questions

When was the Commodore US-4 first released in the USA?

The exact release date is uncertain, but most sources estimate it was between 1972 and 1974. The calculator's release year can vary based on model variations.

What makes the Commodore US-4 unique compared to other calculators?

The Commodore US-4 was notable for its combination of advanced functions, affordability, and portability. It offered 16 programmable functions and a long battery life, making it popular among engineers and students.

Are there any known production batches of the Commodore US-4?

Yes, there are several known production batches with slight variations in specifications. These differences can help estimate the most likely release year.