🏷️ Basic Information Identification Make: Casio Model: SF-7900E/8900 Digital Diary Year: 1995 Generation Generation: N/A 📋 Manual Details Description Manual Type: Repair Manual + Parts List Language: English Format Format: PDF Download Availability Availability: Downloadable ⚙️ Engine Specifications General Engine Type: N/A (Electronic Device) Displacement: N/A Power: N/A 🔧 Transmission General Type: N/A (Electronic Device) Gears: N/A 📐 Dimensions Physical Length: N/A (Device Dimensions Vary) Width: N/A (Device Dimensions Vary) Height: N/A (Device Dimensions Vary) Weight: N/A (Device Weight Varies) 🔧 Maintenance Routine Service Interval: N/A (User-Serviceable) Oil Capacity: N/A 📄 Features Display Display Type: LCD Storage Storage Capacity: Varies by model variant Connectivity Connectivity Options: N/A (Standalone Device) 📄 Technical Data Power Source Power Source: Batteries (Type Not Specified) Processing Processor Type: Proprietary Casio Processor Memory Memory Type: RAM (Amount Not Specified) Input Input Method: Keyboard Output Output Method: LCD Display