website/content/museum/olympia-op-544-op-644.md at 0663e96a461c61eb03008e0b13a047120e62c82a

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yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import)

1,289 discussions, 9,527 archived comments; pages no longer carry the comments themselves.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ

2026-10-13 17:26:43 +02:00

2.4 KiB

Raw Blame History

title, categories, types, origins, years, cpus, params

title

categories

types

origins

years

cpus

params

Olympia OP 544 / OP 644

Computers

Pocket

Japan

1982

HD61913 CMOS VLSI

name

image

company

company_name

specs

tabs

forum_thread

photos

oc_id

source

OP 544 / OP 644

/media/museum/photos/olympia_op544_system_s1.jpg

/companies/olympia

Olympia

label	value
NAME	OP 544 / OP 644

label	value
MANUFACTURER	Olympia

label	value
TYPE	Pocket

label	value
ORIGIN	Japan

label	value
YEAR	1982

label	value
END OF PRODUCTION	Unknown

label	value
BUILT IN LANGUAGE	Basic interpreter

label	value
KEYBOARD	53 keys with numeric keypad

label	value
CPU	HD61913 CMOS VLSI

label	value
SPEED	455 kHz ceramic resonator used as system clock

label	value
RAM	1 KB (544 bytes for Basic programs) up to 2 KB

label	value
ROM	12 KB

label	value
TEXT MODES	1 line x 12 chars plus a 4 digit seven segment display part

label	value
GRAPHIC MODES	None

label	value
COLORS	Monochrome LCD

label	value
SOUND	None

label	value
SIZE / WEIGHT	165 (W) x 71 (D) x 10 (H) mm / 116 g (with batteries)

label	value
I/O PORTS	12-pin expansion port for printer and cassette interface\ 11-pin internal slot for memory module

label	value
POWER SUPPLY	2 x CR-2032 lithium batteries

label	value
PERIPHERALS	CI-546 cassette interface, and all Casio PB-100 extensions

label	value
PRICE	Unknown

photos

975

title	subtitle	text	image
FRONT VIEW #1			/media/museum/photos/olympia_op544_system_s2.jpg

title	subtitle	text	image
FRONT VIEW #2			/media/museum/photos/olympia_op544_frontview_s1.jpg

title	subtitle	text	image
OP-644		Here connected to the Olympia CI-546 cassette interface, same as the Casio FA-3 interface.	/media/museum/photos/olympia_op644_system_s1.jpg

1001

url	date
https://web.archive.org/web/20230608080253/http://www.old-computers.com/museum/computer.asp?c=1001	2023-06-08

The Olympia OP-544 was the same machine as the Casio PB-100.

The OP-644 also had the same specifications, but featured a built-in 20-line thermal printer and a better keyboard layout with a true space bar. It was actually a Casio FX-802P

2.4 KiB Raw Blame History

2.4 KiB

Raw Blame History