Editing Compatible Time-Sharing System (section)

===Peripherals===
Input-output hardware was mostly standard IBM [[peripheral]]s. These included six data channels connecting to:
* Printers, [[punched card]] readers and punches
* [[IBM 729]] tape drives, an [[IBM 1301]] disk storage, later upgraded to an [[IBM 1302]], with 38 million word capacity
* An [[IBM 7320]] drum memory with 186K words that could load a 32K-word memory bank in one second (later upgraded to 0.25 seconds)
* Two custom high-speed vector graphics displays<ref>{{cite web |url=http://www.bitsavers.org/pdf/mit/lcs/tr/MIT-LCS-TR-056.pdf |title=An Integrated Hardware-Software System for Computer Graphics in Time Sharing |first1=D. E. |last1=Thornhill |first2=R. H. |last2=Stoz |first3=T. T. |last3=Ross |first4=J. E. |last4=Ward |date=1968 |publisher=MIT Project MAC |access-date=February 20, 2022 |id=ESL-R-356 and MAC-TR-56 |quote=Console facilities include hardware projection of three-dimensional line drawings, automatic light pen tracking, and a flexible set of knob, switch, and push-button inputs. The console is attached to the Project MAC IBM 7094 Compatible Time-Sharing System either directly or through a PDP-7 Computer.}}</ref>
* An [[IBM 7750]] transmission control unit capable of supporting up to 112 [[teleprinter]] terminals, including [[IBM 1050]] [[Selectric]]s and [[Teletype Corporation#Teletype Corporation|Model 35]]s. Some of the terminals were located remotely, and the system could be accessed using the public [[Telex|Telex and TWX]] networks.