On eBay Now...

Vintage CASE Lot of 10 New Casio fx-300S NOS Scientific Calculators RARE For Sale

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

---

Vintage CASE Lot of 10 New Casio fx-300S NOS Scientific Calculators RARE:
$120.00

This vintage CASE lot of 10 new Casio fx-300S handheld scientific calculators is a rare find for collectors and enthusiasts. Each calculator is in its original, never-used condition, showcasing the classic blue color and functional style that Casio is known for. Perfect for adding a touch of retro charm to any office or workspace, these calculators offer both aesthetic appeal and practical functionality for all your mathematical needs.

All new in original box, sold as is, no returns.

---

---

---

Vintage DYMO 1570 Chrome Black Label Maker W/ Case Extra Wheels

$79.99

---

1 pc new 16610 Series Sub Vintage Case, for 3135

$489.99

---

Vintage CASE Lot of 10 New Casio fx-300S NOS Scientific Calculators RARE

$120.00

---

Popular Tutorials

Alarms and Indicator Circuit diagrams

• Power supply failure alarm
• Theft preventer alarm
• Rain Alarm
• A simple electronic buzzer
• Water Level Indicator with alarm

Audio electronic circuits list

• Stereo Channel Selector
• Low cost intercom using transistors
• Infrared Head Phones
• Use the CD-ROM drive as a audio CD player without the computer
• Audio Visual Indicator for Telephones
• Ultrasonic pest repellent

Circuits for Cars/Motorcycles

• Charge Monitor for 12V lead acid battery.
• Wiper Speed Control
• Dome Light Dimmer for Cars
• Car anti theft wireless alarm.

Computer/PC Hardware Circuits :

• Control electrical appliances using PC
• Simple Analog to Digital Converter
• PC based Frequency Meter
• 7 segment rolling display using PC

Design Ideas :

• Soft ON/OFF switch

Fun/Games Circuits :

• Electronic Scoring Game
• JAM(Just A Minute) Circuit
• Flashy Christmas Lights
• TV remote control blocker

Signal/Sequence/Misc. Generators :

• Simple IF Signal Generator

Home/Garden related Circuits :

• Ultrasonic Pest Repeller
• Programmable Digital Code Lock
• Pot plant water tester

Lights & LED Circuits :

• Light Flasher (blinking lights)
• Automatic Dual output Display
• Emergency Light
• Automatic Room Lights
• Running Message Display

Motor Circuits :

• Automatic Speed Controller for fans & Coolers
• Soft Button type Motor Direction Controller
• Super simple stepper motor controller
• Discrete component motor direction controller

Music related Circuits :

• Digital Volume Control
• 5 band graphic equalizer

< Oscillator Circuits :

• Simple variable frequency oscillator
• Sawtooth wave generator

Power Supply (PS) Circuit diagrams :

• Negative supply from single positive supply
• Self switching Power Supply
• Ultra low drop linear voltage regulator

Radio,transmitter,receiver circuits :

• Car anti theft wireless alarm.
• Long range FM transmitter
• Remote control using VHF modules
• 40 meter Direct Conversion Receiver

Remote Control Circuit diagrams :

• Remote control using VHF modules
• Remote control using telephone
• A simple Remote control Tester
• Clap Activated Remote
• Radio Remote Control using DTMF
• Ultrasonic switch

Robotics related Circuits :

• Magnetic proximity sensors
• Color Sensor
• Super simple stepper motor controller

Sensors :

• Magnetic proximity sensors
• Dew sensor
• Color Sensor
• Metal Detector
• Optical toggle switch using a single Chip

Telephone Circuit diagrams :

• Telephone Ringer using 556 dual timers
• Two line intercom plus a telephone changeover switch
• Telephone line based audio muting and light on circuit
• Having secrecy in parallel telephones
• Telephone call meter using calculator & COB

Test & Measurement Circuits :

• High Resistance Voltmeter
• A simple Remote control Tester
• Contactless Mains Voltage Indicator
• Zener Diode Tester