Texas Instruments TI-1795 SV Standard Function Calculator

Introduction

The Texas Instruments TI-1795 SV is a classic mini-desktop calculator designed for home, office, or retail use. It features large keys and a clear SuperView display, making it easy to operate and read. This manual provides detailed instructions on setting up, operating, and maintaining your calculator to ensure optimal performance.

Figure 1: Angled view of the Texas Instruments TI-1795 SV calculator, showing its large display and well-spaced keys.

Setup

The TI-1795 SV calculator is designed for convenience, operating on both solar power and battery power. This dual power source ensures reliable operation in various lighting conditions.

Power Source

• Solar Power: The calculator primarily uses solar power when sufficient light is available. Ensure the solar panel, located above the display, is exposed to light for operation.
• Battery Power: In low-light conditions or when solar power is insufficient, the calculator automatically switches to battery power. One A battery is required for this function.

Battery Installation

1. Locate the battery compartment cover on the back of the calculator.
2. Carefully slide or unclip the cover to open the compartment.
3. Insert one A battery, ensuring the positive (+) and negative (-) terminals are aligned correctly according to the diagram inside the compartment.
4. Replace the battery compartment cover securely.

After battery installation, the calculator should power on automatically when the "ON/C" key is pressed or when exposed to light.

Operating Instructions

The TI-1795 SV features a well-spaced keyboard with large, contoured keys for comfortable and accurate input. The angled display provides easy viewing of calculations.

Figure 2: Front view of the TI-1795 SV calculator, highlighting the key layout.

Basic Operations

• Power On/Clear: Press ON/C to turn on the calculator or clear the current entry/calculation. Pressing it twice clears the memory.
• Addition, Subtraction, Multiplication, Division: Use the +, -, x, and ÷ keys for standard arithmetic operations.
• Equals: Press = to display the result of a calculation.
• Decimal Point: Use the . key for decimal numbers.

Special Functions

• Change Sign (+/-): Press +/- to change the sign of the displayed number from positive to negative or vice versa. This simplifies entry of negative numbers.
• Percentage (%): Use the % key for percentage calculations. For example, to calculate 10% of 200, enter 200 x 10 %.
• Square Root (√): Press √ to calculate the square root of the displayed number. This key is useful for schoolwork.
• Memory Functions (M+, M-, MRC):
  • M+: Adds the displayed number to the memory.
  • M-: Subtracts the displayed number from the memory.
  • MRC: Press once to recall the memory content. Press twice to clear the memory.
• Tax Functions (TAX+, TAX-): These keys are used for quick tax calculations.
  • TAX+: Adds tax to the displayed number.
  • TAX-: Subtracts tax from the displayed number.
  • RATE: Use this key to set or check the tax rate. Consult the calculator's specific tax rate setting procedure if needed.

Maintenance

Proper care and maintenance will extend the life of your TI-1795 SV calculator.

• Cleaning: Use a soft, dry cloth to clean the calculator's exterior. For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner. Avoid using harsh chemicals or abrasive materials.
• Storage: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
• Battery Replacement: If the display becomes dim or erratic in low light, it may be time to replace the A battery. Refer to the "Battery Installation" section under Setup for instructions.
• Avoid Drops: Protect the calculator from drops and impacts, which can damage internal components or the display.

Troubleshooting

If you encounter issues with your TI-1795 SV calculator, try the following solutions:

• Display is blank or dim:
  • Ensure the solar panel is exposed to sufficient light.
  • Check the battery. Replace it if it's old or depleted.
  • Press the ON/C key.
• Incorrect calculations:
  • Ensure you are pressing the correct keys and in the correct order.
  • Clear the calculator by pressing ON/C twice to clear all entries and memory.
  • Verify the tax rate setting if using tax functions.
• Keys are unresponsive:
  • Ensure the calculator is powered on.
  • Check for any debris or stickiness around the keys. Clean gently if necessary.

If problems persist, contact Texas Instruments customer support for further assistance.

Specifications

Key technical specifications for the Texas Instruments TI-1795 SV Standard Function Calculator:

Figure 3: Diagram showing the approximate dimensions of the TI-1795 SV calculator.

Warranty and Support

Texas Instruments products are manufactured to high quality standards. For information regarding warranty coverage, please refer to the warranty card included with your purchase or visit the official Texas Instruments website.

For technical support, product registration, or to find answers to frequently asked questions, please visit the Texas Instruments support page:

Texas Instruments Customer Support

Please have your product model number (TI-1795 SV) and any purchase details ready when contacting support.