Acorn Microcomputer
Table:
Acorn Microcomputer

Upper board, featuring keypad and LED display.

Developer	Acorn Computers
Type	8-bit semi-professional
Release date	March 1979; 45 years ago (1979-03)[1]
Introductory price	£65 (kit), £75 (assembled)[2]
CPU	6502 @ 1MHz
Memory	1.125K
Storage	CUTS cassette tape interface
Display	LED
Graphics	-
Sound	-
Input	25-key keypad
Controller input	-
Connectivity	INS8154 RAMIO Expansion chip (optional), CUTS cassette tape interface, socket for optional additional ROM/EPROM
Power	7.5V+ from external PSU through onboard 5V regulator
Dimensions	160 x 100mm two stacked boards
Successor	Acorn System 2, Acorn Atom

With reference to the table, state whether the hypothesis is entailed, neutral, or refuted. Give your final answer in JSON format {"answer": "YOUR ANSWER"}.

Statement: Acorn Microcomputer was released with a keyboard but not a joystick.

answer: entailed