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CER ((セルビア語:Цифарски Електронски Рачунар) – ''Digital Electronic Computer'') model 203 was an early digital computer developed by Mihajlo Pupin Institute (Serbia) in 1971. It was designed to process data of medium-sized businesses: * In banks, for managing and processing of accounts, bookkeeping, foreign-currency and interest calculations, amortization plans and statistics * In manufacturing, for production planning and management, market data processing and forecasting, inventory management, financial document management and process modelling * In utilities, to calculate water and electricity consumption, to produce various reportsand lists and for technical calculations and design * In construction industry for network planning method design, financial management and bookkeeping * In trading companies for payment processing, market analysis, inventory management and customer and partner relationship management ==Specifications== Central Processing: * Type: BMS-203 * Number of instructions: 32 * Performance: * * one 16-cycle instruction: 20 μs * * one single cycle instruction: 5 μs * * addition and/or subtraction of two 15-digit numbers: 20 μs Primary memory: * Capacity: 8 kilowords * Speed (cycle time): 1 μs * Complete, autonomous memory error checking * Parity control Punched tape reader: * Dielectric-based reading * Speed: 500 to 1,000 characters per second * Accepts 5, 7 and 8-channel tapes Tape puncher'': * Speed: 75 characters per second Parallel Line Printer 667: * "On the fly" printing * 128 characters per line * Removable/replaceable printing cylinder * Speed: * * 500 lines per minute for a character set of 63 characters * * 550 lines per minute for a character set of 50 characters * Automatic paper feeder * Two line spacing settings * Programamtic tape for discontinuous paper movement * Maximum number of carbon copies: 6 Independent Printer M 30: * 132 characters per line * Speed: * * Prints 25 alphanumeric characters per second * * Prints 33 numeric characters per second * * Tabulation speed: 144 characters per second * * Blank printing speed: 100 characters per second * Maximum number of carbon copies: 6 Magnetic cassettes 4096: * Capacity: 600,000 characters * Variable record length * Transfer rate: 857 characters per second * Tape speed: 10 inches per second Magnetic Tape Drives: * Data format: 9-track ASCII with inter-record space of 0.6 inches (1.524 cm) * Data density: 556/800 bits per inch * Capacity per tape: c. 10,000,000 characters * Tape speed: 24 inches/s, 150 inches/s fast-forward and rewind * Transfer rate: 19.2 kHz * Tape width: 1/2 inch (1.27 cm) * Tape length: 2400 ft (731.52 m) * Working ambient temperature range: 5 °C to 40 °C * Relative humidity: up to 80% * Integrated circuit control logic * Separate control panel for each drive * Read/Write Capabilities: * * Read and Write forward * * Read forward * * Read reverse 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「CER-203」の詳細全文を読む スポンサード リンク
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