9815A HP Hewlett Packard Scientific Desktop Calculator Powers

Review HP Hewlett Packard Scientific Desktop Computer Calculator Powers On

The HP 9815A Scientific Desktop Calculator, proudly produced by Hewlett-Packard, is a powerful and versatile mathematical tool designed to cater to the needs of scientists, engineers, and students. Its sleek and compact design, with a size of approximately 13 inches long, 6 inches wide, and 3 inches high, makes it an ideal addition to any laboratory or study space.

The HP 9815A calculator boasts a high-contrast, backlit LCD display, measuring 2.5 inches diagonally, which ensures ease of use in various lighting conditions. This display is capable of showing up to 12 digits of precision and can be switched between English and scientific notation.

One of the most notable features of this calculator is its extensive mathematical capabilities, supporting a broad range of functions, including trigonometric, logarithmic, exponential, and statistical calculations. It also includes a built-in constant library, allowing users to access popular mathematical constants such as , e, and 2 at the touch of a button.

The HP 9815A offers a multitude of input methods, including standard keypad entry, direct data entry from the built-in function keys, and direct data entry from an external data source via its RS-232 interface. It also supports various data transfer methods, including ASCII, HP-IL, and IEEE-488, ensuring seamless integration with other laboratory equipment and software.

Moreover, this calculator features a built-in programmer, enabling users to create and store custom functions and equations. It can store up to 999 programs, each with 12 lines of user-defined instructions, and provides the ability to chain programs together using the RUN and GOSub commands.

The HP 9815A Scientific Desktop Calculator is powered by four AA alkaline batteries or an optional AC adapter. Its battery life is impressive, lasting up to 50 hours on a set of fresh batteries. Additionally, it comes equipped with a protective rubber keypad cover and a carrying handle, ensuring both durability and convenience for users on the go.

In conclusion, the HP 9815A Scientific Desktop Calculator is a feature-rich and reliable mathematical companion for professionals and students alike. Its extensive mathematical capabilities, versatile input methods, built-in programmer, and long battery life make it an indispensable tool for scientific, engineering, and educational applications.

The HP 9815a Hewlett-Packard Scientific Desktop Calculator is a high-performance calculator designed for scientists, engineers, and mathematicians. Here are some pros and cons of buying this calculator:

1. High Precision: The HP 9815a calculator offers a high degree of precision with a maximum of 15 significant digits. It can handle complex mathematical functions and equations with ease.

2. Programmability: It has a built-in programmability feature that allows users to store and recall mathematical sequences and formulas. This feature saves time and effort in performing repetitive calculations.

3. Large Display: The calculator comes with a large, easy-to-read display that shows up to 12 digits at a time. It also has a backlight for low-light conditions.

4. Durable: The HP 9815a calculator is built to last with a solid construction and high-quality components. It is also resistant to water and impact, making it ideal for use in harsh environments.

5. Keypad: The keypad is large and well-spaced, making it easy to use, even with large fingers.

6. Multiple Functionality: The calculator offers a wide range of mathematical functions, including trigonometric, exponential, logarithmic, and statistical functions.

1. Cost: The HP 9815a calculator is more expensive than some other calculators on the market.

2. Size: It is larger than most handheld calculators, making it less portable for some users.

3. Power Source: The calculator requires 4 AA batteries, which can add to the overall cost and the need for frequent battery replacements.

The HP 9815a Hewlett-Packard Scientific Desktop Calculator is an excellent choice for scientists, engineers, and mathematicians who require high precision and programmability in their calculations. Its large display, durable construction, and multiple functionality make it a valuable investment for those who need a reliable and powerful calculator. However, its high cost and larger size may be a drawback for some users.

If you need a high-precision calculator for complex mathematical functions and equations, the HP 9815a Hewlett-Packard Scientific Desktop Calculator is a great investment. Its programmability feature and large display make it an efficient and convenient tool for mathematical calculations. However, if you are looking for a more affordable or portable option, there are other calculators on the market that may better suit your needs.

Details:

The unit powers on but stays just as it shows in the photos. Probably could use a good cleaning. Being sold for parts/repair. Its been in storage for a few decades so no other testing was done.

The lid where the roll of paper is doesn stay shut.

specifications vintcalc:

• brand: Hp
• mpn: 9815a
• part type: Calculator
• vintage: Yes

general vintcalc:

• category: Electronics > Vintage Calculators

payments vintcalc:

• other
• credit card: visa
• wallet: paypal

offer vintcalc:

• best offers: true
• prices: $18.77–$75.00
• item condition: Used
• started: february 16, 2025
• in stock #: 3
• sold #: 20
• availability: in stock
• options: ship-to-home

returns vintcalc:

• paid by: buyer
• policy: returns accepted
• method: money back
• time: 30 days

shipping vintcalc:

• carrier: fedex
• type: calculated
• transit: 5-10 days
• service: fedex ground or fedex home delivery
• class: standard

seller vintcalc:

• city: san luis obispo, california
• # reviews: 3327
• rating: 100.0%