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Calculates cost based on selling price and profit margin.
Calculates selling price based on cost and profit margin.
Calculates profit margin based on cost and selling price.
Instructions for setting and recalling the tax rate.
How to add or deduct tax amounts from prices.
Critical safety warning regarding button cell batteries.
Calculates cost based on selling price and profit margin.
Calculates selling price based on cost and profit margin.
Calculates profit margin based on cost and selling price.
Instructions for setting and recalling the tax rate.
How to add or deduct tax amounts from prices.
Critical safety warning regarding button cell batteries.
The Canon AS-220RTS is a calculator designed for various business and general calculations, offering a range of functions from basic arithmetic to more complex financial and memory operations. Its user-friendly interface is supported by a clear display and intuitive key functions, making it suitable for both professional and everyday use.
The calculator supports a wide array of mathematical operations. For basic arithmetic, it handles addition, subtraction, multiplication, and division. It also features a "Mixed" calculation mode, allowing for complex expressions involving multiple operations, such as 140-35+22 or (2+4)+3x8.1. The device can perform power calculations, as demonstrated by 3^4, and fraction-to-decimal conversions, like 1/5.
A significant feature is its "Constant" calculation capability. This allows users to repeat an operation with a constant value without re-entering it. For example, after setting +3 as a constant, subsequent entries like 2, 4, or 9 will automatically add 3 to them, resulting in 5, 7, and 12 respectively. This is particularly useful for repetitive calculations.
The calculator also includes "Percentage" functions, enabling users to easily calculate percentages for additions and subtractions. Examples include 1200+(1200x20%) and 1200-(1200x20%), which are common in financial contexts.
For business-specific needs, the AS-220RTS incorporates "Business Calculation" functions. These allow for the calculation of cost, selling price, and profit margin. Users can input any two of these values (e.g., selling price and profit margin) to determine the third, streamlining financial analysis. For instance, with a selling price of $2,000 and a profit margin of 30%, the calculator can determine the cost. Similarly, it can calculate the selling price from cost and profit margin, or the profit margin percentage and value from cost and selling price.
A "Tax Calculation" feature is also integrated, allowing users to set a tax rate and then easily add or deduct tax from a given amount. This is highly convenient for retail or invoicing scenarios, where calculating prices with or without tax, as well as the tax amount itself, is a frequent requirement. The tax rate can be set and recalled as needed.
The calculator includes a "Memory" function, which is essential for storing and recalling intermediate results. Operations like 3x4 can be stored in memory, and subsequent calculations can add to or subtract from the stored value. The memory can be cleared when no longer needed. This function helps in breaking down complex problems into manageable steps.
A "Check & Correction Calculation" feature is a standout, providing a 120-step replay memory capacity. This allows users to review the entire calculation process step-by-step, which is invaluable for verifying accuracy and identifying errors. If an error is found, the "CORRECT" function enables users to modify specific figures within the calculation steps. This replay memory also indicates the step number and highlights constant or percentage calculations. If a calculation exceeds 120 steps, the indicator will blink, and further steps will not be recorded in the replay memory.
The AS-220RTS is designed for ease of use. The display clearly shows the input and results, with specific indicators for memory usage ("M"), tax rate ("TAX%"), and constant calculations ("K"). The "ON/CA" key serves to power on the device and clear all current calculations and memory.
The "AUTO CHECK" function allows for an automatic scroll-through of the calculation steps from beginning to end, which is useful for a quick review without manual key presses. This can be stopped at any time.
The calculator has an automatic power-off function to conserve energy. If no keys are pressed for more than 7 minutes, the device will turn off automatically. Pressing the "ON/CA" key will restart it.
In cases of "Overflow," where a result or memory content exceeds 12 digits or division by zero occurs, an error message "E" will be displayed, and the keyboard will be locked. Pressing the "CI" key will clear the overflow and allow for continued operation.
To ensure the longevity and proper functioning of the calculator, several maintenance guidelines are provided. Users should avoid placing or storing the calculator in environments with strong sunlight, rapid temperature changes, high humidity, or dust, as these conditions can negatively impact the device.
Cleaning the calculator should be done with a dry cloth; water, organic solvents, or detergents should not be used, as they can damage the casing or internal components. It is also advised to keep the calculator away from iron filings, which could interfere with its electrical circuits.
Users should refrain from twisting or bending the calculator, attempting to open it, or allowing it to come into contact with water or other liquids. These actions can cause irreparable damage.
The calculator operates on both solar power and an alkaline battery (LR44 x 1). While it has a battery, users are advised not to attempt to change it themselves. Instead, a Canon Service Center technician should handle battery replacement to prevent damage to the device.
The manual also includes a warning about button/coin cell batteries, emphasizing that they are hazardous and must be kept out of reach of children. If swallowed or placed inside the body, immediate medical attention is required. This highlights the importance of safe handling and storage, especially in households with children.
Overall, the Canon AS-220RTS is a robust and versatile calculator, offering a comprehensive set of functions for both general and business applications, coupled with features that enhance usability and promote device longevity through proper care.
General| Type | Display |
|---|---|
| Cover | No |
| Form factor | Desktop |
| Control type | Buttons |
| Product color | Black |
| Housing material | Plastic |
| Tax calculation | Yes |
| Digits | 12 digits |
| Display type | LCD |
| Display size (HxV) | 109 x 25 mm |
| Display character size | 18 x 7 mm |
| Display number of lines | - lines |
| Memory type | M+, M-, RM/CM |
| Storage media type | - |
| Battery type | LR44 |
| Power source | Battery |
| Number of batteries supported | 1 |
| Harmonized System (HS) code | 84701000 |
Weight and Dimensions| Depth | 150 mm |
|---|---|
| Width | 134 mm |
| Height | 36 mm |
| Weight | 150 g |
