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Data from RS232 units can travel over 900 m
Eight memoriesprogrammed at once An intelligent programmer for E*PROMs and nonEPROMs, volatile RAMS (including 512k devices) has been released by UK firm Stack The S2000 simultaneously programs up to eight devices from a single master, says Stack. Up to eight devices, each with a different data pattern, can be programmed in a single operation, adds the firm. The S2000 does not involve the use of personality modules. Data is downloaded and uploaded via the RS232 interface. There is an integral RAM editor for modifying data. Stack specifies communication rates as high as 19 200 baud. Devices can be recognized by the S2000 if they incorporate an identifier code. The unit also has select keys for the selection of correct device type without having to scroll through lengthy menus. The S2000 will program 16 devices at the same time, via a 15way ribbon cable plugged into the
S2000 intelligent programmer for EPROMs, E*PROMs and NVRAMs
I 5-way slave connector at the back of the basic unit. By daisychaining and adding eight-way slave units, up to 48 devices can be programmed simultaneously. (Stack ltd, 43 Lower Close, Aylesbury, Bucks HP21 8S6, UK. Tel: (0296) 33470)
Improved communications for the 8050 A modified version of the 8050 microcontroller has been introduced by National Semiconductor. The NS8050U has a built-in three-wire serial communications port to increase its communications capacity. The device uses an expanded 8048 instruction set with three I/O pins assigned to the Microwire Plus interface. This enables serial communications between two or more NS8050Us or peripherals such as a display driver, EPROM, etc. The interface allows serial data exchange with only three wires via a serial I/O port. This port is essentially an 8-bit clocked shift register. Three pins on the standard 8050 have taken on secondary functions to accommodate the Microwire Plus interface: pin TO is used for the clock, pin P26 is used for serial output and pin P27 is used for serial input in the NS8050U. Two extra instructions, XCHM (master) or
vol 9 no 2 march 7985
XCHS (slave), select the Microwire Plus mode and initiate communication. For Microwire Plus applications, one NS8050U must be designated as a master. This device supplies the system clock signals and initiates all data transfers (between the master and one or more slaves). A slave can be a Microwire peripheral or another NS8050U. The modified controllereliminates the 8-bit interface normally used for system expansion, says National Semiconductor. Moreover, adds the firm, it is a cheap alternative to the 8050 in designs that need synchronous serial communication. The NS8050U is made in both 6 MHz and 11 MHz clock speed versions. A ROMless model, the available. NS8040U, is also (National Semiconductor, Industriestrasse 70, D-8080 Furstenfeldbruck, FRC. Tel: (08747) 703376. Telex: 527649)
Data from RS232 units can travel over 900 m Two RS232 interface level converters using current loop techniques have been introduced. Designer Custom Technology of the UK says that the converters facilitate data transmission over distances up to 900 m as opposed to the normal 15 m for RS232 at 9600 baud. The model ILCI is a single-line freestanding unit. The model I LC32 is for applications that need up to 32 channels in a single rackmounted unit. Custom Technology claims that its units give solutions up to 40% cheaper than existing modems and line drivers for commercial and industrial uses. Both units come in 110 V-60 Hz or 230 V-50 Hz versions. (Custom Technology Ltd, Brooks Road, Lewes, East Sussex BN7 2BY, UK. Tel: (0273) 479707. Telex: 8777 73)
ArabicEnglish micros include KHAWARIZMI Arabic-English microcomputers using 3.5 in disc drives have been released by US firm Research Computer Technology. The Al-Raed 50 system comes with KHAWARIZMI (the Arabic programming language) and a bilingual word processor. Arabic and/or English software packages in the libraries of earlier members of the Al-Raed series will run on the Al-Raed 50, the smallest in the line. Programming languages FORTRAN, used include PASCAL, COBOL and c. Each of the Al-Raed 50’s two disc drives has 500k of storage. The system has 64k internal memory, a screen and a 96-key keyboard with 17 function keys and a calculator keypad layout. The price of the package - computer, keyboard, screen, dot-matrix printer, bilingual mail merge, KHAWARIZMI and word processor is $3890. (Research Computer Technology Corp., 3752 Kashiwa Street, Torrance, CA 90505, USA. Tel: (273) 534 5800. Telex: 664207 RCTC TRNC)
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S2000 intelligent programmer for EPROMs, E*PROMs and NVRAMs
I 5-way slave connector at the back of the basic unit. By daisychaining and adding eight-way slave units, up to 48 devices can be programmed simultaneously. (Stack ltd, 43 Lower Close, Aylesbury, Bucks HP21 8S6, UK. Tel: (0296) 33470)
Improved communications for the 8050 A modified version of the 8050 microcontroller has been introduced by National Semiconductor. The NS8050U has a built-in three-wire serial communications port to increase its communications capacity. The device uses an expanded 8048 instruction set with three I/O pins assigned to the Microwire Plus interface. This enables serial communications between two or more NS8050Us or peripherals such as a display driver, EPROM, etc. The interface allows serial data exchange with only three wires via a serial I/O port. This port is essentially an 8-bit clocked shift register. Three pins on the standard 8050 have taken on secondary functions to accommodate the Microwire Plus interface: pin TO is used for the clock, pin P26 is used for serial output and pin P27 is used for serial input in the NS8050U. Two extra instructions, XCHM (master) or
vol 9 no 2 march 7985
XCHS (slave), select the Microwire Plus mode and initiate communication. For Microwire Plus applications, one NS8050U must be designated as a master. This device supplies the system clock signals and initiates all data transfers (between the master and one or more slaves). A slave can be a Microwire peripheral or another NS8050U. The modified controllereliminates the 8-bit interface normally used for system expansion, says National Semiconductor. Moreover, adds the firm, it is a cheap alternative to the 8050 in designs that need synchronous serial communication. The NS8050U is made in both 6 MHz and 11 MHz clock speed versions. A ROMless model, the available. NS8040U, is also (National Semiconductor, Industriestrasse 70, D-8080 Furstenfeldbruck, FRC. Tel: (08747) 703376. Telex: 527649)
Data from RS232 units can travel over 900 m Two RS232 interface level converters using current loop techniques have been introduced. Designer Custom Technology of the UK says that the converters facilitate data transmission over distances up to 900 m as opposed to the normal 15 m for RS232 at 9600 baud. The model ILCI is a single-line freestanding unit. The model I LC32 is for applications that need up to 32 channels in a single rackmounted unit. Custom Technology claims that its units give solutions up to 40% cheaper than existing modems and line drivers for commercial and industrial uses. Both units come in 110 V-60 Hz or 230 V-50 Hz versions. (Custom Technology Ltd, Brooks Road, Lewes, East Sussex BN7 2BY, UK. Tel: (0273) 479707. Telex: 8777 73)
ArabicEnglish micros include KHAWARIZMI Arabic-English microcomputers using 3.5 in disc drives have been released by US firm Research Computer Technology. The Al-Raed 50 system comes with KHAWARIZMI (the Arabic programming language) and a bilingual word processor. Arabic and/or English software packages in the libraries of earlier members of the Al-Raed series will run on the Al-Raed 50, the smallest in the line. Programming languages FORTRAN, used include PASCAL, COBOL and c. Each of the Al-Raed 50’s two disc drives has 500k of storage. The system has 64k internal memory, a screen and a 96-key keyboard with 17 function keys and a calculator keypad layout. The price of the package - computer, keyboard, screen, dot-matrix printer, bilingual mail merge, KHAWARIZMI and word processor is $3890. (Research Computer Technology Corp., 3752 Kashiwa Street, Torrance, CA 90505, USA. Tel: (273) 534 5800. Telex: 664207 RCTC TRNC)
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