TR 440 is the designation from Telefunken AG, late AEG Telefunken, and computers society Konstanz from the TR 4 developed Grossrechners.Der TR 440 at several German universities begun, among other things University of further Bochum (1971), University of Munich, University of peppering castle, University of Hamburg, University of attaining, university Stuttgart.Der Erlanger computer were developed as only to a three-fold processor.

Technical details

• monolithic circuits
• Core memory modules of 16 K words to ever 52 bits
• Cycle time 0.9 microseconds, during cycle lap 0.125 microseconds
• approx. 800,000 operations/second
• Slave computer TR 86

Register (arithmetic unit, 48+4 bits):

• A -- Accumulator
• Q -- Quotient register
• D -- Multiplicand register
• H -- Auxiliary register
• M -- Register of trademarks
• Y --

In the accumulator transportation and arithmetic operations are implemented, in addition the register serves as buffer for data which can be worked on. With the quotient register the accumulator can be connected to registers double-long with multiplication and division necessary.

Register (program control unit, 24 bits):

• F -- Instruction sequence register
• BL -- Ready address register
• U -- Subroutine register
• German Federal Armed Forces -- Bell
• BT -- Test register
• B -- Ready address register
• K -- Noticing light register
• BG -- Clock
• X -- Index base register

The index base register contains the start address a range from 256 half-words of main storage, which serve a program as Indexspeicher.

intended peripheral devices

• Display terminal SIG 100 (vector graphics)
• Teleprinter FSR 105 for set off jobs
• Drum storage TSP 500
• Disk memory PSP 600
• Disk storage with interchangeable disk pack WSP 414
• Magnetic tape units MDS 254
• Punch card reader LKL 720
• Punched-tape reader LSL 195
• Tape punching press LSS 150
• Highspeed printer Southern German Broadcasting Corporation 176

The word has 52 bits, by which for the actual information representation 48 bits are used. The remaining bits contain the type identifier

• 0 -- Floating decimal point value
• 1 -- Fixed point value (comma left)
• 2 -- Command words (2 for each complete word)
• 3 -- Character string (6 indications for each complete word)

and Dreierprobe.Die integer representation takes place in the complement-on-one, i.e. negation via reversal bit by bit, the lift/drag ratio representation via exponent to the basis 16, with 8-bit exponent, 38 bits (84 with double accuracy) mantissa.

A architekturale characteristic are type identifier-dependent instructions. These require for example as operand a floating point and/or fixed point word except half, whole and Doppelworten can by special instructions beside bytes (to 8 bits) also arbitrary word cutouts be transported.

Operating system BS3

• several pile programs parallel running off
• interactive of time-sharing system over satellite TR 86

Related links

• History OF Telefunken TR-440 (illustration)

Articles in category "TR 440"

We found here 3 articles.

Related Websites

We found here 5 related websites.

• Breadman TR 440
  Favorite soul food recipes of Willie Crawford, learned while growing up with his grandmother on a North Carolina tobacco farm. Soul food recipes posted ...


• NTP: Abstract for TR-440 - Ozone & Ozone/NNK
  TR-440 Toxicology and Carcinogenesis Studies of Ozone (CAS No. 10028-15-6) and Ozone/NNK (CAS No. 10028-15-6/ 64091-91-4) in F344/N Rats and B6C3F1 Mice ...


• NTP: TR-440 Ozone (2-year study)
  Home >> Study Results & Research Projects >> Summaries & Associations of Study Results >> List of 2-yr Studies by Report No. >> TR 400 - 499 >> TR-440 Ozone ...


• NTP: TR-440 Pathology Tables and Curves
  TR-440 Pathology Tables and Curves. Printer Friendly · Printable Version. TR-440 OZONE & OZONE/NNK. OZONE STUDIES 1 AND 2 ...


• Re: Breadman TR 440
  Favorite soul food recipes of Willie Crawford, learned while growing up with his grandmother on a North Carolina tobacco farm. Soul food recipes posted ...