Tandy TRS-80 Model 4

URI: https://gptkb.org/entity/Tandy_TRS-80_Model_4
GPTKB entity
Statements (36)
Predicate Object
gptkbp:instanceOf gptkb:personal_computer
gptkbp:brand gptkb:Radio_Shack
gptkbp:category gptkb:personal_computer
mainframe computer
gptkbp:compatibleWith gptkb:TRS-80_Model_III
gptkbp:countryOfOrigin gptkb:United_States
gptkbp:displayType monochrome
80x24 text
gptkbp:expansion gptkb:UART
expansion interface
RS-232 serial port
https://www.w3.org/2000/01/rdf-schema#label Tandy TRS-80 Model 4
gptkbp:key detachable
gptkbp:manufacturer gptkb:Tandy_Corporation
gptkbp:marketedAs gptkb:Radio_Shack
gptkbp:notableFeature detachable keyboard
80-column display
backward compatibility with Model III
optional double-sided floppy drives
optional graphics board
gptkbp:operatingSystem gptkb:CP/M
gptkb:LDOS
gptkb:TRSDOS
gptkbp:powerSource internal
gptkbp:predecessor gptkb:TRS-80_Model_III
gptkbp:processor gptkb:Zilog_Z80A
gptkbp:RAM 64 KB
128 KB
gptkbp:releaseDate April 1983
gptkbp:speed 4 MHz
gptkbp:storage gptkb:DVD
gptkbp:successor gptkb:Tandy_1000
gptkbp:weight about 25 lbs
gptkbp:bfsParent gptkb:TRSDOS_6.2.1
gptkb:TRSDOS_6.x
gptkbp:bfsLayer 7