---
title: "310 I/O port with real time clock"
id: 11592
type: "product"
slug: "310-i-o-port-with-real-time-clock"
url: "http://localhost/product/310-i-o-port-with-real-time-clock/"
markdown_url: "http://localhost/product/310-i-o-port-with-real-time-clock.md"
published_at: "2019-11-30T01:17:48+00:00"
modified_at: "2026-03-22T13:20:40+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "I/O board with our real time clock/calendar. 8 outputs capable of driving relays8 TTL inputsFeed-through Sinclair bus connector to allow normal expansionBattery back-up for clockExpandable ports"
category:
  - name: "Interfacing"
    slug: "interfacing"
    taxonomy: "category"
    url: "http://localhost/category/hardware/interfacing/"
post_tag:
  - name: "JK Audio"
    slug: "jk-audio"
    taxonomy: "post_tag"
    url: "http://localhost/tag/jk-audio/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
genre:
  - name: "Hardware"
    slug: "hardware"
    taxonomy: "genre"
    url: "http://localhost/type/hardware/"
  - name: "Interfacing"
    slug: "interfacing"
    taxonomy: "genre"
    url: "http://localhost/type/interfacing/"
company:
  id: 10986
  title: "JK Audio"
  type: "company"
  url: "http://localhost/company/jk-audio/"
price: 49.95
rarity: "Uncommon"
related_content:
  - id: 35691
    title: "JK-310 Manual"
    type: "document"
    url: "http://localhost/document/jk-310-manual/"
product_reviews:
  - id: 65438
    title: "More Hardware — Clock/Calendar Board by J.K. Audio"
    type: "article"
    url: "http://localhost/article/more-hardware-clock-calendar-board-by-j-k-audio/"
adverts:
  - publication:
      - id: 26645
        title: "SYNC v2 n5"
        type: "issue"
        url: "http://localhost/issue/sync-v2-n5/"
    advert_page: "17"
companies_products:
  - id: 10986
    title: "JK Audio"
    type: "company"
    url: "http://localhost/company/jk-audio/"
---

# 310 I/O port with real time clock

I/O board with our real time clock/calendar.

- 8 outputs capable of driving relays
- 8 TTL inputs
- Feed-through Sinclair bus connector to allow normal expansion
- Battery back-up for clock
- Expandable ports