Keys Used to Manipulate the RPN Stack

•Press (to perform a roll down of the stack. Note the small arrow on the key. A roll down moves the numbers in each register down one level, and the number in the bottom register moves up to the top of the stack.

•Press Dto perform a swap of the stack. Note the small symbol on the key. A swap operation exchanges the numbers of the X and Y registers of the stack.

•If no menu is selected, the <key performs the roll down operation, and the >key performs the swap operation.

Algebraic Mode

To perform the same example in Table 1-2 in Algebraic mode, use parenthe- ses to set the order of operation, and key in the expression as it is written

from left to right. Press :u<(five times) followed by Ito set the operating mode to Algebraic. The message on screen, Algebraic , con- firms your choice. Press Oto return to the default calculator screen, then

press: J(3+4D*(5+6DK

Note the expression displays on screen in the order in which it is keyed. Press =to return a result of 77.00.

Chain Mode

To perform the same example in Chain mode, use parentheses to set the order of operation as you did in Algebraic mode. Calculations in Chain mode are interpreted in the order in which they are entered. If you press an

operation key, +-/*, after pressing =, the calculation is continued using the currently displayed value. Use parentheses to set the

14 Getting Started

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HP 30b Professional manual Keys Used to Manipulate the RPN Stack, Algebraic Mode
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30b Professional specifications

The HP 30b Professional calculator is a versatile tool designed specifically for business professionals, engineers, and educators. This reliable calculator merges advanced technologies with user-friendly features, enabling users to perform complex calculations with ease. The HP 30b is appreciated for its robust design and functionality, making it a top choice among those who require a dependable calculating device for various applications.

One of the standout features of the HP 30b is its capability to handle both RPN (Reverse Polish Notation) and algebraic entry modes. This flexibility allows users to choose the input method that best suits their preferences, enhancing productivity and minimizing calculation errors. The calculator also boasts a large, high-resolution display that ensures clarity when navigating through calculations and results.

The HP 30b comes equipped with essential business functions that include financial calculations, cash flow analysis, and statistical functions, all of which are invaluable in professional settings. Users can seamlessly compute interest rates, perform amortization schedules, and evaluate loan payments, making it an indispensable asset for finance-oriented individuals.

Another key characteristic is its programmable functionality. The HP 30b allows users to create custom programs tailored to specific tasks, which can save time and reduce manual entry errors. This programmable capability is especially beneficial for repetitive calculations, providing a significant efficiency boost in ambiguous or multi-step operations.

The durable construction of the HP 30b ensures longevity while the compact design makes it portable and convenient for on-the-go calculations. Additionally, the calculator features an energy-efficient design, which includes a long-lasting battery life, reducing the need for frequent replacements.

With a straightforward key layout and intuitive interface, the HP 30b is designed with user experience in mind. Whether in a classroom, office, or fieldwork scenario, users can easily navigate functions and access the features they need quickly. The HP 30b Professional calculator is truly an impressive blend of technology and practicality, making it an essential tool for anyone needing reliable performance in their daily calculations.
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